SUMMARY Testing out the Latest KDE Plasma Beta on Arch Ive encountered that a couple of my games after a short period of play begin stuttering excessively and frame rate drops to 30-33fps. The games in question are Generation Zero, No Mans Sky, and Monster Hunter World. Generation Zero and Monster Hunter World do it most readily, GZ begins stuttering and dropping frames to the point of being unplayable, MHW does it as you load into the game. No Mans Sky on the other hand is hard to pin down as the games performance can be a bit wonky at the best of times. This continues until you alt+tab out of the game and then back in. This fixes the issue for a short period till you again have to alt+tab. Changing compositor settings doesnt change the situation regardless of what settings for latency or smoothness are used and this doesnt occur on the latest stable 5.26.5 release or on other DEs. My best guess is this is related to Kwin as i cant think of anything else that may cause this. I havent yet reproduced this on an X11 session. Please let me know if any other information is needed STEPS TO REPRODUCE 1. Run/Play one of the Listed games (or possibly others may also do it) on wayland 2. Game begins to stutter down to 30-33fps 3. Alt+Tab OBSERVED RESULT Game Stutters/Drops FPS till you alt+tab EXPECTED RESULT Game Shouldnt stutter SOFTWARE/OS VERSIONS Linux: Arch Linux KDE Plasma Version: 5.26.90 KDE Frameworks Version: 5.102.0 Qt Version: 5.15.8 ADDITIONAL INFORMATION System ------- Ryzen 5600x RX 6800 Mesa 22.3.3 32gb Ram Arch Linux 6.1.7-zen1-1-zen
Just a quick update, I was able to also reproduce this behavior on X11 as well so it seems to not be Wayland specific
Does it also happen on X11 with compositing disabled (press Shift+Alt+F12 to toggle it)?
(In reply to Zamundaaa from comment #2) > Does it also happen on X11 with compositing disabled (press Shift+Alt+F12 to > toggle it)? I does not happen when compositing is disabled. It usually happens within 5min of playing but after 20min i still had no framerate issues when disabled
Another update on this, running the games through a nested gamescope session with launch options gamescope -W "screen width #" -H "screen height #" -f -e -- (in case anyone hasnt used it substitute screen height and width in place of "screen width #" and "screen height #") also seems to eliminate the issue, might it be possible that the games arent being recognized as full screen? Could possibly explain why having gamescope create the fullscreen window seems to fix it also.
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Im going to close this report as resolved, with the release of 5.27 i can no longer reproduce this issue after 8hrs of gameplay