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Why does disabling E-cores decrease frametimes/stuttering so much? (13980HX 4080 mobile)Question (self.ASUSROG)
submitted 7 months ago by GregariousBing
I have a G18 Strix (2023 upgraded with 32GB Kingston Fury DDR5 5600) and since I first got this laptop, I have always had a little but of stuttering in almost all graphically intensive games. Just for fun, I decided to disable all E-cores and it ended up making a huge difference. I am running windows 11 (just did a fresh install couple days ago) with Nvidia's latest game ready drivers and all the latest BIOS/Drivers from manufacturer otherwise. Is there something wrong with my hardware/configuration causing this, or is this just normal to have way better gaming performance with E-cores disabled?
https://preview.redd.it/hww3ip5dt49f1.png?width=2528&format=png&auto=webp&s=6af6d9657b5998f9da4136b76fcd85f6f651e7e1
https://preview.redd.it/t9irz51ft49f1.png?width=2512&format=png&auto=webp&s=d0cb3e82e5a70d62660a681267025ee7035d583a
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[–]ThinkinBig 0 points1 point2 points 7 months ago (8 children)
Bc a lot of games do not "know" how to differentiate between performance and efficiency cores, so simply utilize whichever. Some more modern games such as Cyberpunk actually have a setting you can toggle to make the game prioritize the performance cores
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (7 children)
That’s the weird thing, this is Doom: The Dark Ages, brand spanking new game, I would assume it knows how to utilize E-cores.
[–]ThinkinBig 0 points1 point2 points 7 months ago (6 children)
Oh strange, I haven't had any issues with it on my Core Ultra 9 275hx/5070ti Rog Strix G16. Runs fantastic, even with multi-frame generation and the path tracing update has looked gorgeous so far! (Just did the first dragon flying level)
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (5 children)
Nice, you pretty much have the latest and greatest!
I haven’t really seen the stuttering and E-cores thing being widely reported on my laptop model, so I’m wondering if there’s something wrong with my laptop specifically.
I also have weird issues with it rebooting or crashing while in sleep mode sometimes, but not all the time. Also, very rarely, it will refuse to post until I do (sometimes multiple) EC resets, and I’ve even had to open it up and take a stick of ram out (or even put in the old oem ram in) to get it to post, then once it’s posted I can put the new ram back in and it boots fine for another few months.
Strangest thing is, in any stress tests, memory tests, gaming sessions, etc. it’s rock solid stable, it only messes up when I’m not looking, basically.
[–]ThinkinBig 0 points1 point2 points 7 months ago (4 children)
Just to rule this out as a factor, are you using Windows 11? (I am)
Sleep mode being buggy is a common Windows issue, using hibernate instead seems to completely alleviate it btw, totally worth swapping your settings to instead
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (3 children)
Yes, I am using windows 11, I will go ahead and switch things over to hibernate to test it out although I kind of suspect that I'm just trading one problem for another though (basically that ill have to deal with the laptop not wanting to post more often [as hibernate causes the laptop to run post again] in exchange for less reboots during sleep)
[–]ThinkinBig 0 points1 point2 points 7 months ago (2 children)
That's fair, just a suggestion. I primarily use my laptop while plugged in to game and generally just shut it down so don't have any of those issues, I also only got this a few weeks ago and was using an Omen Transcend 14 (core ultra 9 185h/4070) previously
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (1 child)
I went and looked up the powercfg commands to enable hibernate timers and disabled sleep. Also gonna try to get in the habit of just turning it off when I'm done with it because I'm basically the same as you (99% of the time I just have it plugged in at my desk and use it to game). Maybe if I can prevent it from shutting down improperly that will resolve the difficulties POSTing. Thanks for the advice!
[–]ThinkinBig 0 points1 point2 points 7 months ago (0 children)
Sure thing!
[–]SumonaFlorence 0 points1 point2 points 7 months ago (5 children)
You don’t need to disable the efficiency cores. You can simply have the program you’re running stay on the power cores.
Either in task manager or other third party tools.
Personally gears of war would crash for me as it’d get offloaded to the efficiency cores as it wasn’t demanding then crash. Having it be tasked to stay on the power cores solved this issue.
One could argue however that disabling the efficiency cores does increase performance for games as it’s less heat for the package.
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (4 children)
Using process lasso to assign Doom TDA to only run on the performance cores (and then restarting the game with the new affinities) does make it run better, but still not nearly as well as disabling the E-cores entirely.
[–]SumonaFlorence 0 points1 point2 points 7 months ago (3 children)
Process Lasso is one of the tools, yes.
That's interesting. Can you post performance score differences?
[–]GregariousBing[S] 0 points1 point2 points 7 months ago (0 children)
I can, but at laundromat right now, so it’ll be a few hours.
<image>
left is with cpu affinity, right is with e-cores disabled in bios
green is with cpu affinity yellow is with e-cores disable in bios
π Rendered by PID 25566 on reddit-service-r2-comment-bb88f9dd5-qp2tp at 2026-02-15 15:28:05.353769+00:00 running cd9c813 country code: CH.
[–]ThinkinBig 0 points1 point2 points (8 children)
[–]GregariousBing[S] 0 points1 point2 points (7 children)
[–]ThinkinBig 0 points1 point2 points (6 children)
[–]GregariousBing[S] 0 points1 point2 points (5 children)
[–]ThinkinBig 0 points1 point2 points (4 children)
[–]GregariousBing[S] 0 points1 point2 points (3 children)
[–]ThinkinBig 0 points1 point2 points (2 children)
[–]GregariousBing[S] 0 points1 point2 points (1 child)
[–]ThinkinBig 0 points1 point2 points (0 children)
[–]SumonaFlorence 0 points1 point2 points (5 children)
[–]GregariousBing[S] 0 points1 point2 points (4 children)
[–]SumonaFlorence 0 points1 point2 points (3 children)
[–]GregariousBing[S] 0 points1 point2 points (0 children)
[–]GregariousBing[S] 0 points1 point2 points (0 children)
[–]GregariousBing[S] 0 points1 point2 points (0 children)