https://bugs.kde.org/show_bug.cgi?id=487622
Bug ID: 487622
Summary: Significant performance regressions on Plasma 6.1 on
AMD integrated graphics when using wayland
Classification: Plasma
Product: kwin
Version: git-stable-Plasma/6.1
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: performance
Assignee: kwin-bugs-n...@kde.org
Reporter: lima.lucas...@gmail.com
Target Milestone: ---
When using Plasma 6.1, the general performance of Plasma is having various
framerate issues.
My laptop is equipped with a 165hz screen and when using testufo.com the
framerate appears to fluctuate between 100, 90, or even something like 60 fps.
Sometimes it stabilizes for a short time at the correct 165 fps, only to fall
back to the inconsistent FPS again.
This happens on the internal laptop screen without any external screen
connected.
STEPS TO REPRODUCE
1. Open testufo.com in Kwin 6.0.90.1 using Firefox (using it's wayland backend)
2.
3.
OBSERVED RESULT
Framerates should vary below the monitor refresh rate.
EXPECTED RESULT
The Framerate should be the same as the monitor refresh rate
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.9.2-arch1-1
(available in About System)
KDE Plasma Version: 6.0.90
KDE Frameworks Version: 6.2.0-1
Qt Version: 6.7.1
ADDITIONAL INFORMATION
I've tested against Mesa 24.0.7 and 24.1.0, and both show the same behavior.
Using kwin-explicit-sync from AUR
(https://aur.archlinux.org/packages/kwin-explicit-sync) also doesn't cause this
issues.
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