Bug 457735

Summary: Low fps on the secondary display when playing games
Product: [Plasma] kwin Reporter: Robin Tetour <Rob.Tetour>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate, xaver.hugl
Priority: NOR    
Version First Reported In: 5.25.4   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Robin Tetour 2022-08-10 21:23:48 UTC 
SUMMARY
When playing a game on that display the framerate is bad even though the game is reporting 60fps. When I run the same game at the same settings on the internal laptop display everything works as expected.

OBSERVED RESULT
Kwin has trouble running games on the external monitor smoothly - mangohud reports 62fps but the gameplay feels more like 30. This issue disappears when running the game on the internal laptop screen.

EXPECTED RESULT
KWin should run the game same way on the external display like on the internal display.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Fedora 36
(available in About System)
KDE Plasma Version: 5.25.4
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.5
Device: Lenovo Yoga Slim 7 ProX 14IAH7
Comment 1 Vlad Zahorodnii 2023-01-17 10:29:28 UTC 

*** This bug has been marked as a duplicate of bug 452219 ***