https://bugs.kde.org/show_bug.cgi?id=498628
Bug ID: 498628
Summary: Framerate Doubling in Bursts when mirroring screens
Classification: Plasma
Product: kwin
Version: 6.2.5
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: kwin-bugs-n...@kde.org
Reporter: j...@tekkie.com.au
Target Milestone: ---
SUMMARY
KDE will double the framerate of mirrored high refresh rate screens in bursts,
this will create stuttering and smoothness issues
STEPS TO REPRODUCE
1. Set two monitors to a high refresh rate
2. Mirror the two monitors using Display configuration
OBSERVED RESULT
Frame rate will frequently swap between desired frame rate and the combined
frame rates of the two screens.
EXPECTED RESULT
Both screens stay at the maximum framerate set in Display configuration
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch 6.12.8
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.9.0
Qt Version: 6.8.1
ADDITIONAL INFORMATION
Video of the effect here:
https://imgur.com/a/T6HzVD6
along with screenshot of monitor settings
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