https://bugs.kde.org/show_bug.cgi?id=495260
Bug ID: 495260
Summary: Low FPS, regression since 6.2.1
Classification: Plasma
Product: kwin
Version: 6.2.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: performance
Assignee: kwin-bugs-n...@kde.org
Reporter: patchouli.knowledge....@gmail.com
Target Milestone: ---
SUMMARY
KWin suffers from low FPS on desktop (210-220 FPS). In gaming, it could be 240
for certain games (I experience that in osu-lazer), while some other more
demanding games such as Counter-Strike 2 would make KWin render at 150 FPS,
while the game hits 500-600 FPS. KWin will render closer to 240 FPS (but not
quite there yet; somewhere around 200) if I limit the game to 240 FPS or enable
V-Sync.
If I downgrade KWin to 6.2.0 (while keeping the rest of the DE at 6.2.1 or
6.2.2), the issue resolves and my display output is buttery smooth once again.
Upgrading KWin to 6.2.1 regresses the performance significantly. It is not
fixed in 6.2.2.
STEPS TO REPRODUCE
1. Set display to 240Hz
2. Enable FPS effect on desktop
3. Use the desktop and look at KWin's FPS
4. Try gaming and look at KWin's FPS
OBSERVED RESULT
On desktop, FPS will be around 210-220. In games, it could be either 240, or as
low as 130 despite the games rendering at *much* higher FPS.
EXPECTED RESULT
KWin is expected to render at my monitor's refresh rate - 240Hz, just like it
does in 6.2.0.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
Kernel Version: 6.11.5-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 32 × 13th Gen Intel® Core™ i9-13900K
Memory: 31.1 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4090/PCIe/SSE2
ADDITIONAL INFORMATION
Using proprietary nvidia-open drivers. Tested on 560 and 565.
I cannot attach screenshots showing KWin's FPS because screenshots taken with
Spectacle do not display the effect.
--
You are receiving this mail because:
You are watching all bug changes.
