https://bugs.kde.org/show_bug.cgi?id=449958
Bug ID: 449958
Summary: Windowed Vulkan applications are limited to 58 FPS in
XWayland
Product: kwin
Version: 5.24.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Windowed Vulkan applications don't go above 58FPS. You can temporarily
circumvent this limit by playing around with the display settings while the
application is running.
STEPS TO REPRODUCE
1. Login into a Wayland session
2. Start a Vulkan application (eg. vkcube) through XWayland with an FPS counter
like MangoHud
3. In Windowed Mode: It only goes max 58FPS, switching to fullscreen the
application will render at your monitors refreshrate (eg. 144hz->144fps,
165hz->165fps)
OBSERVED RESULT
Window does not render more than 58fps.
EXPECTED RESULT
Windows should render at about the same framerate as in fullscreen as seen in
the X11 Session.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro Linux
(available in About System)
KDE Plasma Version: 5.24.0
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Mesa Version: 21.3.5
Xorg-XWayland Version: 21.1.4
CPU: Intel Core i5-9600k
RAM: 32GB
GPU: AMD Radeon RX 580
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