https://bugs.kde.org/show_bug.cgi?id=505819
Bug ID: 505819
Summary: Plasma 6.4: Stutter in game(s?)
Classification: Plasma
Product: kwin
Version First 6.4.0
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: performance
Assignee: kwin-bugs-n...@kde.org
Reporter: malim...@tutanota.com
Target Milestone: ---
After updating to Plasma 6.4 I noticed periodic sync-like stutter in FFXIV
(launched w/ XIVLauncher), reminiscent of the stutter caused by
https://bugs.kde.org/show_bug.cgi?id=488843. I haven't noticed it in other
games (although I haven't tried very many). This time setting
`KWIN_DRM_DISABLE_TRIPLE_BUFFERING=1` doesn't seem to have any effect, so
triple buffering itself is not the culprit. Upon disabling triple buffering I
did notice slightly less jerky scrolling in e.g. Firefox (might be
https://bugs.kde.org/show_bug.cgi?id=490358), but it's not worth the overall
loss in system responsiveness.
I also tried using system wine (which is `wine-tkg-git` 10.4 w/ ntsync) and
DXVK 2.6.2 instead of the versions provided by XIVLauncher, and it did not make
any difference.
Hardware: Hybrid GPU setup (Intel iGPU + AMD dGPU), generic 60Hz monitor w/o
VRR
Arch Linux
Kernel: 6.15.2.zen1-1
Mesa: 1:25.1.4-1
Plasma: 6.4.0-1 (from testing)
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