https://bugs.kde.org/show_bug.cgi?id=419760
Bug ID: 419760
Summary: frame rate drops to 30fps if blur and transparency
effects are enabled, blur background is enabled in
Konsole and Konsole window is maximized
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: bugsefor...@gmx.com
Target Milestone: ---
Created attachment 127335
--> https://bugs.kde.org/attachment.cgi?id=127335&action=edit
frame rate when Konsole is not maximized
SUMMARY
This issue affects both X11 and Wayland sessions.
On X11, frame rate drops from 60 to 45 fps, on Wayland from 60 to 30 fps.
STEPS TO REPRODUCE
1. enable transparency and blur effects
2. enable blur in Konsole settings (right-click > edit current profile >
"appearance" section.
Click on "Edit" button, check "Blur background", click "Ok" button, click on
"Ok" button again
3. maximize Konsole window
OBSERVED RESULT
frame rate drops. Compare the screenshots taken on Wayland when Konsole is not
maximized and when it is maximized.
EXPECTED RESULT
frame rate should not drop after the steps above
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5.68.0
Qt Version: 5.15.0 beta3
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