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Asus ROG Strix Scar 16 (G634JZ) RTX 4080 is stuttering when using the discrete GPU

Level 9

Got this laptop last June 15 and I noticed that when using Ultimate in GPU mode in the Armoury Crate, games are stuttering really hard to the point that it's unplayable. They're also have lower FPS when the stuttering isn't happening. One of the things I noticed it that the GPU usage fluctuates between 50-99%.

The stuttering disappears once I use Standar in GPU mode which allows me to enable advanced optimus in the nvidia control panel, but that mode is busted too because I can't control the brightness level, the screen's brightness overly bright and it hurst my eye, and my display settings are detecting 2 monitors. So I'm avoiding that mode for now too.

Games which I've obeserved the stuttering:

  • Red Dead Redemption2
  • Cyberpunk 2077

I've yet to test other GPU intensive games, but so far the stuttering isn't present in games like DoTA2, Valorant or other non GPU intensive titles. I've tried using the recommended Nvidia drivers from the device's support page and clean installed my GPU drivers using DDU. I also tried fresh reinstalling windows but still nothing. I don't wanna update my BIOS though cause there seems to be an issue with ASUS laptops in updating the BIOS.


270 REPLIES 270


the picture before was MW3, this is MW2 

but please note, that i play just on 120fps if i stop the fps limiter then its around 200 Frames ^^
i just want to show you the  stuttering problem with the dropouts in MW3.

again: MW2 works fine in armoury crates Standard Mode

And i have the stuttering and dropouts in all games when i play in armoury crates ultimate mode,too.


ok, ive not played any COD game on this laptop yet, had last years model with the 3070 ti and completed MW2 with no issues at all.

Just downloading MW2 now.

Right, just had a go. All ok here, Ultimate dGPU mode, 2560x1600 all High preset with DLSS on. Unlimited FPS loaded up Amsterdam getting 180 fps with no stutter or drops.. 

Level 10

New driver today says its fixed the bug finally ! Im going to try it now 546.17


Fixed Gaming Bugs

  • [Alan Wake 2] Addressing gradual stability and performance degradation over extended periods of gameplay [4334633]
  • [Counter Strike 2] Improved NVIDIA Reflex functionality and performance [4361128]
  • [Starfield/Cyberpunk 2077] Stutter observed on some Advanced Optimus notebooks [4341762] *********
  • [Control] Game stability issues over extended periods of gameplay [4313811]

Hi, unfortunately no, everything is the same as before...

Level 8

Unfortunately, the issue still occurs in cyberpunk

Level 9


Sie haben das gleiche Stotterproblem

Ich werde jetzt die Antwort eines Mannes ausprobieren, der  die Treiberversion 537.58 ohne Probleme ausführt. Ältere Versionen finden Sie auf der NVIDIA-Website.

I thought it works, because das macht für mich am meisten Sinn, als ich MW3 Beta gespielt habe, hatte ich keine Probleme, bei extremen Einstellungen lief alles reibungslos.

But it makes no sense i tried with the Gameready Driver and with the Studio Driver no difference.

Maybe its a Problem of the Bios Update, i dont know...


Level 10

CRUCIAL UPDATE  - Rog strix Scar 18 with Rtx 4090 mobile

driver 546.17 released today HAS SOLVED THE PROBLEM FOR ME. No more stuttering in gpu "ultimate" mode with reBAR active in Cyberpunk 2077. Thanks for the attention and to anyone involved  on the technical side on this fix. Please don't let this problem surface again in future drivers or firmware updates,  as it took me a lot of reseach effort to pinpoint the cause expecially before finding this topic, and i'm now really fully enjoying this laptop again.

Glad it sorted for you also 🙂 Tried SF earlier and CP2077 just now and runs great and now even better with ReBar ON.