https://bugs.kde.org/show_bug.cgi?id=452119
Bug ID: 452119
Summary: Poor performance on intel igp on wayland versus Xorg
Product: kwin
Version: 5.24.4
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: kokok...@gmail.com
Target Milestone: ---
Today i switched from x11 to wayland, but unfortunately windows keep stuttering
when doing basic movement/maximizing.
I'd say the effect is more pronunced when there are more windows on screen.
If i go for low latency, even dragging a window with wobbly effect on stutters.
I may not have a fast gpu, granted, it is an haswell igp, but under xorg, it is
butter smooth in driving 2 monitors at 1920x1080.
To have smooth animations with not so much frames dropped, i've to use the
highest latency setting.
While intel_gpu_top reports no significant gpu usage (20%), even when windows
are stuttering, one thing that helps is setting the igp min frequency to an
higher value; that way i can even use the balanced preset.
But what REALLY helps, is enabling the Show FPS effect.
With just that active, i can even force the lowest latency settings, and
everything is magically smooth like under Xorg.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.3
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