I have an overclocked Samsung Epic and it the improvement in speed in everyday use is significant. Because the processor voltage is set lower than stock there is no sacrifice in battery life. With the Asus Transformer do you get a definite and significant benefit from overclocking? I am not talking about test bench scores but real world noticeable responsiveness. When I skim through the forums it is difficult for me to tell? Some people swear by sticking with stock. I would appreciate others perspectives.
Thanks
The improvements from overclocking vary on the application.
Home screen switching is choppy regardless of overclocking simply because the launcher lacks optimization. Browser performance is improved a little bit, but mainly remains unchanged as well. Games run noticeably smoother, especially Fpse. Task switching gets a small boost, as some applications will be able to load faster.
If you're a big gamer, overclocking is definitely worth it. For everything else, it won't make much of a difference.
I haven't played too many games (mostly Stardunk and Stupid Zombies) on my TF, but I haven't noticed any issues with them. I have also played high profile 720p video with absolutely no stuttering or artefacts.
In other words, I haven't felt the need to overclock yet. But if you are doing heavy gaming and/or video processing of some kind, it might be worthwhile.
For me, there's hardly any need to OC. It all depends on what you wanna do. To many people who play a lot of games on their TF, they report increases in performance (especially with emulators) but on other things I never really noticed any difference. I'm currently underclocking my TF, and have been for about a week, with no noticable stutters or performance issues and have great battery life.
And it's not really an "effort" to flash a new kernel... the hardest thing is waiting for your device to boot up again...
I have a transformer, galaxy tab 10.1, and a xoom. I've used just about every kernel that can be overclocked for each one of them, and to be honest I haven't really seen any improvements from them. I don't really play many games on my tablets though, so maybe there really is some benefit in that area.
Galaxy's screen
How do you rate the screen of the Galaxy Tab 10.1? Is it as good as the Super AmoLED (+)'s from Samsung mobiles?
droidx1978z4 said:
I have a transformer, galaxy tab 10.1, and a xoom. I've used just about every kernel that can be overclocked for each one of them, and to be honest I haven't really seen any improvements from them. I don't really play many games on my tablets though, so maybe there really is some benefit in that area.
Click to expand...
Click to collapse
This seems so counter-intuitive to me. If you overclock a PC CPU there is a very direct correlation with performance. There are always limiting factors such HD acess, etc., but there is a definite and noticeable difference across applications. What is even more surprising is that we are talking about very large % increases vs what people can do in the PC world. People are overclocking these CPUs by 50% plus...You would think you would see a very noticeable improvement but that doesn't seem to be the case.
My main interest is in browser performance. For example, XDA forum pages load extremely slow in all browsers I have tried (stock, Opera, Dolfin) with 5-6s to refresh vs instant on desktop browser. Also flash video tends to freeze and stutter some times. My internet connection is over 20Mb/s down and 5Mb/s up. I was hoping that I would find overclocking safe and provide a noticeable improvement.
earlyberd said:
The improvements from overclocking vary on the application.
Home screen switching is choppy regardless of overclocking simply because the launcher lacks optimization. Browser performance is improved a little bit, but mainly remains unchanged as well. Games run noticeably smoother, especially Fpse. Task switching gets a small boost, as some applications will be able to load faster.
If you're a big gamer, overclocking is definitely worth it. For everything else, it won't make much of a difference.
Click to expand...
Click to collapse
So for web page loading you haven't noticed much of a difference? How about flash video?
Thanks.
Overclocking can be a bit like collecting .. 'string' , because it is mostly done for the sake of itself, kind of like the many Ham Radio fans who talk about their "rigs", etc etc.
Yeah, of course if you can get, like in the old old days, a celeron 300 that overclocks to 450, and is dead stable, it was noticeable, and if you had a droid 1, which overclocked (many did) with ease from 500 to 1000+ , then it was again, noticeable, just not a staggeringly 2 times increase, because there are too many other factors.
The number of bus errors, and retries and slowness of the original bus speeds, and other components makes for a not-quite-as-expected by the numbers 'increase'. I would still mess with it, but not for the obvious reasons. I like under-volting more, and over-clocking only the slightest bit where nothing ever crashes or FCs. The moment you overclock, you really shouldn't be asking questions about 'Why does blah blah netflix crash?' because it crashes because you overclocked, and nothing else matters until you stick a kernel back at stock in there.
The other thing I love about alternate kernels is that you've got control of what modules you either compile in or compile and load as .ko files. cifs, tun, ntfs, whatever, it is all very useful, so there are lots of good and not-as-good things about it.
One thing I hate is when a dev insists on creating a kernel that has a 'default' speed greater than stock so that you've instantly got an ordeal if you've got one of the many gizmos that will not overclock to his default (like 1.6 to pick a number out of a hat).. Just make them all start at default, then allow us , the users, to setup overclocking via testing with setcpu or some such thing. Much easier than basically bricking things right off.
I sometimes look at those guys that overclock 'seriously' (by 3-4 times) using a container of liquid nitrogen that lasts for ~5 minutes and it is all for bragging rights, setting records , etc and think they're insane, but that is also part of it. Some are happy if they can just post here that they got 9,000 mF on some test despite not being able to do anything else reliably.
hachamacha said:
Overclocking can be a bit like collecting .. 'string' , because it is mostly done for the sake of itself, kind of like the many Ham Radio fans who talk about their "rigs", etc etc.
Yeah, of course if you can get, like in the old old days, a celeron 300 that overclocks to 450, and is dead stable, it was noticeable, and if you had a droid 1, which overclocked (many did) with ease from 500 to 1000+ , then it was again, noticeable, just not a staggeringly 2 times increase, because there are too many other factors.
The number of bus errors, and retries and slowness of the original bus speeds, and other components makes for a not-quite-as-expected by the numbers 'increase'. I would still mess with it, but not for the obvious reasons. I like under-volting more, and over-clocking only the slightest bit where nothing ever crashes or FCs. The moment you overclock, you really shouldn't be asking questions about 'Why does blah blah netflix crash?' because it crashes because you overclocked, and nothing else matters until you stick a kernel back at stock in there.
The other thing I love about alternate kernels is that you've got control of what modules you either compile in or compile and load as .ko files. cifs, tun, ntfs, whatever, it is all very useful, so there are lots of good and not-as-good things about it.
One thing I hate is when a dev insists on creating a kernel that has a 'default' speed greater than stock so that you've instantly got an ordeal if you've got one of the many gizmos that will not overclock to his default (like 1.6 to pick a number out of a hat).. Just make them all start at default, then allow us , the users, to setup overclocking via testing with setcpu or some such thing. Much easier than basically bricking things right off.
I sometimes look at those guys that overclock 'seriously' (by 3-4 times) using a container of liquid nitrogen that lasts for ~5 minutes and it is all for bragging rights, setting records , etc and think they're insane, but that is also part of it. Some are happy if they can just post here that they got 9,000 mF on some test despite not being able to do anything else reliably.
Click to expand...
Click to collapse
Great post!
+1
Very philosophical ! ;-)
I guess what I am getting at is if you overclock to 1.2Ghz-1.3Ghz on the Transformer can you have a stable system that shows an appreciable improvement in responsiveness? Moving from hypothetical to actual...have you done this? Any specific kernel?
The engineer in me is looking for a definitive answer. ;-)
Thanks.
sstea said:
Very philosophical ! ;-)
I guess what I am getting at is if you overclock to 1.2Ghz-1.3Ghz on the Transformer can you have a stable system that shows an appreciable improvement in responsiveness? Moving from hypothetical to actual...have you done this? Any specific kernel?
The engineer in me is looking for a definitive answer. ;-)
Thanks.
Click to expand...
Click to collapse
Yeah, I've done this, just not on the TF yet. I'm working on a kernel right now that doesn't have OC built-in and activated at boot, so that we can use setcpu to screw around with it and find that 'sweet spot' that works for us, also under-over-volting. What I'd really like is to build in all the modules I like, setup over/under-clocking-volting and have it boot at 1 G. I mean, a dual-core 1G is nothing to sneeze at, and then try to ramp it up without screwing with over-volting immediately. I never like other peoples ROMs or Kernels because they have made their own crazy judgement calls. I like my own crazy judgement calls
Here's what I've noticed: When you have 'up-to-date' technology , as we do, in the TF, then overclocking that is totally stable makes a difference and it is noticeable. For me it's the FC's that kill the deal, but this chip and box appear to have plenty of headroom so I'm guessing that 1.2, 1.3, 1.4 are all good possibilities.
Example: My HTC Incredible phone has been overclocked to 1.1 from 1.0G for ~a year or so, and it doesn't FC, and it is faster, noticeably than at 1. It's only a 10% increase and yet it feels much quicker, so go figure. Those things are also subjective, so grain of salt... Example2: A stock droid1 is one I took to a double overclock, 550 to 1000, and yes it was faster at some things, but the underlying infrastructure didn't really support the faster CPU so I really never noticed a 100% increase that matched the clock speed. I left it that way for a year without any damages and it still boots up fine at 1 G.
In another post I started, I was asking what keys were required to boot 'safe mode' which exists in android OSs, and if I knew that, I'd try one of the OC'd kernels right now. IF not, I don't feel like unbricking again.
If you're interested, here's a good link for building your own: (generic android, not TF really:
http://www.droidforums.net/forum/rescue-squad-guides/31452-how-compile-your-own-kernel.html
Thanks for the response. With such a large community of Transformer users I am hoping to find a solid, conservative kernel that I can overclock with. Creating one myself is beyond my current technical capabilities.
My Charge is routinely running 275 - 300 MB of RAM even when "idle" and I receive a LOT of warnings that my memory is running low when I'm using Tasker or Evernote. While I use Linux at home on my personal computer, I'm by no means a professional in any real sense of the word. But my layperson's understanding of RAM is that, generally speaking, more is better and allows for a machine to run, boot, etc... faster and more reliably. I've read that the Charge is a RAM wannabe and I know there are phones with much more than is available with this device but does that mean anything for this phone? Should I be using something that will clear more RAM for me or is that just a pipe dream and I have to deal with the lack of RAM by buying a new phone at some later time?
I'm using Tweaked 3.1 and have to say that Dwitheral has made this phone one I'm happy with - my fiancee has the Charge as well and is paranoid about rooting / ROMing, so she is totally stock. Needless to say, her phone sucks eggs and mine doesn't. I'm looking for a replacement but will not do so until Black Friday next year - then I can get a device that's a little "older" for less than $50 that will be a huge improvement over the Charge. In the meantime, with Tweaked 3.1, a Hyperion 3500 mha extended life battery and Tasker, this phone is serviceable. But the high RAM usage nags at me and I'm wondering if this is really an issue and, if so, is there anything to do about it? When I look at running applications in task manager, it is usually none or one, maybe, on occasion, two running applications.
Can someone clarify this for me? Do I need to be concerned and, if so, is there a solution that doesn't start with "Upon entering the Verizon store, ask where the new DNA is located...."
Thanks in advance!
Forget what you know about RAM in Windows, because this isn't Windows. In Linux (and by extension in Android), unused RAM is generally considered to be wasted. The Android low memory killer (LMK) will take care of killing apps and freeing when it needs to make space for other things, and artificially killing stuff is going to make your phone perform worse and use more battery. You need enough free for apps to have room to start without waiting, but not so much that it kills background apps that you want there. You can tweak the LMK, but 275-300MB used (75-100MB free) is pretty close to the sweet spot for this phone.
I guess it is from since of the tweaks I am running, but I usually have an extra 50-80 MB from what you described.
Sent from my SCH-I510 using Xparent Red Tapatalk 2
Well, I guess it's pretty normal if a phone gets hot while playing hardcore games.
But is it supposed to get this hot while playing games? Sometimes, just by playing Plants Vs. Zombies 2, the phone gets really hot (hotter on the camera part of the phone) that makes it unplayable due to the hotness that makes the camera part untouchable (or I'll get hurt)
I'm asking if this is normal, and if it happens to you guys.
I'm new here btw, so go easy on me
Love ya
warlynx said:
Well, I guess it's pretty normal if a phone gets hot while playing hardcore games.
But it is supposed to get this hot while playing games? Sometimes, just by playing Plants Vs. Zombies 2, the phone gets really hot (hotter on the camera part of the phone) that makes it unplayable due to the hotness that makes the camera part untouchable (or I'll get hurt)
I'm asking if this is normal, and if it happens to you guys.
I'm new here btw, so go easy on me
Love ya
Click to expand...
Click to collapse
Not to be rude but does it really get that hot that you feel like you'll get hurt? I've played games before and the phone has gotten warm like all other phones I've ever owned but hot enough to "hurt me" I haven't noticed.
What I can say is that it's possible that the software (either CM11s ROM or the game you're playing) isn't fully optimized to run on the OPO so it may have the processor working extra hard when it shouldn't have to.
Remember we're basically beta testing this lovely gem so a lot of bugs and such are to be expected since the phone isn't officially open to the public.
OuncE718 said:
Not to be rude but does it really get that hot that you feel like you'll get hurt? I've played games before and the phone has gotten warm like all other phones I've ever owned but hot enough to "hurt me" I haven't noticed.
What I can say is that it's possible that the software (either CM11s ROM or the game you're playing) isn't fully optimized to run on the OPO so it may have the processor working extra hard when it shouldn't have to.
Remember we're basically beta testing this lovely gem so a lot of bugs and such are to be expected since the phone isn't officially open to the public.
Click to expand...
Click to collapse
Well, first of all, it does not happen with just Plants Vs Zombies 2, I gave that game as an example because I usually play more-demanding games (not saying that pvz2 is not a demanding game, actually, i have no idea)
And answering your question, yes, it does get hot enough to hurt me, since the camera part is where it really gets hot, and there is a metal/plastic (yes i can't distinguish, i suck) piece on the camera that when it gets hot, is really untouchable, reaching the point where it hurts by touching it.
Oh, thanks for your reply
I don't have it but then again I can't really talk since I'm not on stock ROM/Kernel. I'm using a custom rom/kernel which uses different algorithms to thermal throttling which keeps the phone nice and cold or not as warm.
Depends on where you are too, if you're playing it outside and its really warm (it is Summer) then yeah.
zephiK said:
I don't have it but then again I can't really talk since I'm not on stock ROM/Kernel. I'm using a custom rom/kernel which uses different algorithms to thermal throttling which keeps the phone nice and cold or not as warm.
Depends on where you are too, if you're playing it outside and its really warm (it is Summer) then yeah.
Click to expand...
Click to collapse
Uhm, yes, it's truth that i'm using stock ROM, but i can assure that the current weather on my place has nothing to do with it getting really hot or not.
warlynx said:
Well, first of all, it does not happen with just Plants Vs Zombies 2, I gave that game as an example because I usually play more-demanding games (not saying that pvz2 is not a demanding game, actually, i have no idea)
And answering your question, yes, it does get hot enough to hurt me, since the camera part is where it really gets hot, and there is a metal/plastic (yes i can't distinguish, i suck) piece on the camera that when it gets hot, is really untouchable, reaching the point where it hurts by touching it.
Oh, thanks for your reply
Click to expand...
Click to collapse
Yeah, my OPO gets this hot as well when I'm playing XCOM--the only "demanding" game I have on it at the moment. When I play other games, or during other normal usage it stays relatively cool. It gets a bit warm when charging, but that's expected from this charger.
I only just got it yesterday morning, so have only had limited testing time, but I'm getting the same thing with the front and back of the phone getting very hot, and the metal piece on the camera getting painfully hot (I have to watch how I hold it so I don't accidently touch it). I wasplaying XCOM for about an hour (the length of my train ride home) and it was hot pretty much from the start. After that hour the game finally crashed... I started it back up and within 5 min it crashed again. Guess that means it's getting throttled?
I'll be testing it again on my ride home later.
---------- Post added at 11:14 AM ---------- Previous post was at 11:08 AM ----------
warlynx said:
Uhm, yes, it's truth that i'm using stock ROM, but i can assure that the current weather on my place has nothing to do with it getting really hot or not.
Click to expand...
Click to collapse
I'm using stock rom too.
Yep, it does get very hot while playing, mainly around the camera area, doesnt really bother me, I guess that with a case you wouldnt even feel it.
What do you expect? This device, like any computing device, when put under CPU load is going to generate heat, it's computing 101 guys. This is why PC's have cooling fans.
Transmitted via Bacon
timmaaa said:
What do you expect? This device, like any computing device, when put under CPU load is going to generate heat, it's computing 101 guys. This is why PC's have cooling fans.
Transmitted via Bacon
Click to expand...
Click to collapse
Yeah, but when we decide to buy a high-end phone, with a really good GPU and CPU, we expect some kind of use to it. Since, in my opinion, having a good GPU, means that we can play high demanding games, and watch some cool high quality movies. I personally want this phone mainly to play those kind of games, that was actually the purpose of buying this phone: knowing that i can play any kind of game i throw at it.
So yeah, I agree that like any computing device, it's normal to get hot. But is it supposed to get so hot, even hurting the holder just because he's playing Plants Vs Zombies 2 for 10 minutes? This issue kinda beats the purpose of having a great GPU. It has a great GPU yeah, but what's the purpose of having it if it overheats the phone?
warlynx said:
Yeah, but when we decide to buy a high-end phone, with a really good GPU and CPU, we expect some kind of use to it. Since, in my opinion, having a good GPU, means that we can play high demanding games, and watch some cool high quality movies. I personally want this phone mainly to play those kind of games, that was actually the purpose of buying this phone: knowing that i can play any kind of game i throw at it.
So yeah, I agree that like any computing device, it's normal to get hot. But is it supposed to get so hot, even hurting the holder just because he's playing Plants Vs Zombies 2 for 10 minutes? This issue kinda beats the purpose of having a great GPU. It has a great GPU yeah, but what's the purpose of having it if it overheats the phone?
Click to expand...
Click to collapse
You bring up a lot of good points. Its just the way the phone's thermal driver operates. Alternatively, you can switch to a kernel that operates their thermal driver differently.
What is a thermal driver?
The generic thermal sysfs provides a set of interfaces for thermal zone devices (sensors) and thermal cooling devices (fan, processor...) to register with the thermal management solution and to be a part of it.
https://www.kernel.org/doc/Documentation/thermal/sysfs-api.txt
Click to expand...
Click to collapse
Basically its responsible for keeping your device nice and cool. Third party kernels such as: Franco, AK kernel, furnace and various custom ROM kernels have a modified thermal driver which can help with your phone overheating. For instance, using Franco Kernel he has his own thermal driver and also removes Qualcomm's mpdecision with his own hotplugging algorithm (powering cores 3/4 on or off depending on the load). You can also downclock your phone using these kernels (as well on stock) to lower the performance of your phone so that it does not heat up but also meet a balance of your phone not lagging with the lower clock.
Other thermal drivers include: Faux's Intellithermal and so forth.
warlynx said:
Yeah, but when we decide to buy a high-end phone, with a really good GPU and CPU, we expect some kind of use to it. Since, in my opinion, having a good GPU, means that we can play high demanding games, and watch some cool high quality movies. I personally want this phone mainly to play those kind of games, that was actually the purpose of buying this phone: knowing that i can play any kind of game i throw at it.
So yeah, I agree that like any computing device, it's normal to get hot. But is it supposed to get so hot, even hurting the holder just because he's playing Plants Vs Zombies 2 for 10 minutes? This issue kinda beats the purpose of having a great GPU. It has a great GPU yeah, but what's the purpose of having it if it overheats the phone?
Click to expand...
Click to collapse
Fair enough, but your high end CPU and GPU are performing as they should be, and because there is no physical cooling system on your phone it's going to get hot. Just because it's a high end device it doesn't mean it shouldn't get hot. The fact that it has such high spec components actually suggests that it'd heat up more than your average phone. By your logic, a high end gaming PC shouldn't heat up, but we know that isn't the case.
Transmitted via Bacon
timmaaa said:
Fair enough, but your high end CPU and GPU are performing as they should be, and because there is no physical cooling system on your phone it's going to get hot. Just because it's a high end device it doesn't mean it shouldn't get hot. The fact that it has such high spec components actually suggests that it'd heat up more than your average phone. By your logic, a high end gaming PC shouldn't heat up, but we know that isn't the case.
Transmitted via Bacon
Click to expand...
Click to collapse
Adding to your point... a high end gaming laptop ... yeah a highend gaming PC heats up but its not as obvious, at least not for some people unless they're on air cooling and can hear the fans. A highend gaming laptop or any multimedia laptop playing games would heat up whatever surface its laying on as well as blowing out hot air.
My point still stands as stated before if OP doesn't want his phone to get "super" hot during games, flash a custom kernel, buy FKU and set up a per-app-mode, I can play PvZ 2 and can downclock it down to 1.5-1.7 (or even lower) without any lag. Just play around with it to get to that sweet spot where you find a balance between performance and battery as well as having your phone not heat up as much as stock.
zephiK said:
Adding to your point... a high end gaming laptop ... yeah a highend gaming PC heats up but its not as obvious, at least not for some people unless they're on air cooling and can hear the fans. A highend gaming laptop or any multimedia laptop playing games would heat up whatever surface its laying on as well as blowing out hot air.
My point still stands as stated before if OP doesn't want his phone to get "super" hot during games, flash a custom kernel, buy FKU and set up a per-app-mode, I can play PvZ 2 and can downclock it down to 1.5-1.7 (or even lower) without any lag. Just play around with it to get to that sweet spot where you find a balance between performance and battery as well as having your phone not heat up as much as stock.
Click to expand...
Click to collapse
Thanks for your reply and for presenting me some solutions, but I forgot to mention that I flashed Paranoid Android already, and from my knowledge, I think I read that it has Franco's Kernel already, so there's no need to flash it, i suppose (correct me if wrong)?
And even flashing that custom ROM, the problem still persists. So, I guess the only solution is to downclock the phone while playing those games.
warlynx said:
Thanks for your reply and for presenting me some solutions, but I forgot to mention that I flashed Paranoid Android already, and from my knowledge, I think I read that it has Franco's Kernel already, so there's no need to flash it, i suppose (correct me if wrong)?
And even flashing that custom ROM, the problem still persists. So, I guess the only solution is to downclock the phone while playing those games.
Click to expand...
Click to collapse
I'm not too familiar with that, I know Franco is on PA's team but their kernel probably isn't 100% Franco Kernel. I could be wrong on this, I am not fully familiar with the situation but you might as well just flash Franco Kernel over it just so you're safe. If you have his FKU app then you can set Per-App-Mode as I mentioned previously.
Custom ROM isn't going to help your phone be "cooler" in temperature. Its on the kernel side of things. You'll need to downclock the phone accordingly on CPU frequency and GPU frequency. I was able to play 1.2-1.7GHz with 330 MHz on GPU. Don't take what I post for granted though, you'll need to sit down and try it out yourself to get the balance between temperature and performance.
At the end of the day, you'll also squeeze out more battery life playing the game too so thats always nice. Lowered temperatures and additional battery life? :victory:
warlynx said:
Well, I guess it's pretty normal if a phone gets hot while playing hardcore games.
But is it supposed to get this hot while playing games? Sometimes, just by playing Plants Vs. Zombies 2, the phone gets really hot (hotter on the camera part of the phone) that makes it unplayable due to the hotness that makes the camera part untouchable (or I'll get hurt)
I'm asking if this is normal, and if it happens to you guys.
I'm new here btw, so go easy on me
Love ya
Click to expand...
Click to collapse
Yes, mine gets too damn hot as well, to the point of burning my fingers, and I was not gaming, just browsing the internet while charging...
It even smells like "hot laptop" and even in the morning, after being charging and off all night, it was still hot...
Also, on my side pocket, I could feel it's heat on my leg while driving...
gothicx said:
Yes, mine gets too damn hot as well, to the point of burning my fingers, and I was not gaming, just browsing the internet while charging...
It even smells like "hot laptop" and even in the morning, after being charging and off all night, it was still hot...
Also, on my side pocket, I could feel it's heat on my leg while driving...
Click to expand...
Click to collapse
It's probably not a great idea to leave your phone on charge all night. You can't overcharge it, but the more time the battery spends at the peak voltage (4.2v) the faster it will degrade. Just a tip.
Transmitted via Bacon
timmaaa said:
It's probably not a great idea to leave your phone on charge all night. You can't overcharge it, but the more time the battery spends at the peak voltage (4.2v) the faster it will degrade. Just a tip.
Transmitted via Bacon
Click to expand...
Click to collapse
Have to check ao much time it will take to reach 100% and then switch it off via timer or such, but I never had this problem with other phones.
Also the OPO charger it's rated at 5V-2.1A and not even my tablets had such chargers...
The highest one I've it's the Nexus 7 one, that's rated at 5.2V-1.5A.
i recently getting extrene heat on my OnePlus to the point that i have to stop n reboot the phone for it to cool down. I have been playing brave frontier since the 1st firmware. The phone runs fine smooth. N suddenly it gets really hot in just 15min play of the game.
I have to stop n reboot the phone. Otherwise it still hot even though i quit the game without reboot. So reboot is a must.
The same thing happened to me today when I downloaded XCOM Enemy Within. I had the phone on "performance" mode. Its pretty much just stock everything, except I unlocked the bootloader, root, etc. I'm going to try and play in on "power save" mode tomorrow. (its late as hell, I should be asleep, I work in 5 hours.) anyway, if that doesn't work, then I will try installing the Franco kernel.
Same problem!
First I really love my OBO, actually I think I'm in love withit. Ohh my god - I'm in love!
But I have the same problem - the fix no. 1 for me was Clean Master and Battery Doctor. I start the cleaning process, and stop all other applications before I start Simcity.
Ohh **** did I just said Simcity! Okay wtf, yes i'm 31 years old, I play Simcity and I'm proud of it...
Fix no.2: have your phone in the hands so it can breath, and not on the couch / bed so the hot air can't escape
I don't know anything about flash, kennel, root and what you young beautiful people call it.
Last but not least, I thank God and myself everyday for switching from iPhone to the best phone ever - The amazing OnePlus One.
Hope the 2 fix can help some.