Bug 446449 - Kwin not running at 100% FPS
Summary: Kwin not running at 100% FPS
Status: RESOLVED UNMAINTAINED
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (other bugs)
Version First Reported In: 5.23.4
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-12-03 22:39 UTC by alexandermasokin
Modified: 2023-09-06 10:38 UTC (History)
1 user (show)

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Description alexandermasokin 2021-12-03 22:39:26 UTC 
I have a laptop with a 144Hz display. I'm using the integrated Intel UHD Graphics. Animations looked super smooth, until one day I updated the system and now KDE is running at what looks like 75 or 90 FPS. I have tried the following:
 - Set Rendering backend to "OpenGL 3.1"
 - Set "Force smoothest animations"
 - Set vsync option to "Only when cheap"
 - Disable all vsync related features in my xorg.conf to increase performance
 - Install kwin-lowlatency from AUR (this seems to break some stuff such as the loading wheel spinning way too fast)

STEPS TO REPRODUCE

OBSERVED RESULT
Visible jitter during window animations or transitions

EXPECTED RESULT
Smooth animations and transitions

SOFTWARE/OS VERSIONS
Linux: 5.15.5.zen1-1-zen (64-bit)
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Comment 1 David Edmundson 2023-09-06 10:38:22 UTC 
This bug was reported against an outdated version of KWin. We have made many changes since the. 
If the issue persists in newer versions can you reopen the bug report updating the version number.