https://bugs.kde.org/show_bug.cgi?id=446166
Bug ID: 446166
Summary: Changing window decorations to anything not default
causes a system performance hit
Product: systemsettings
Version: 5.23.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: kalzwa...@yahoo.com
Target Milestone: ---
SUMMARY
Every time I use a third party window decoration, the system starts chugging as
if the frame rate drops to the 20s or so. I am almost certain that this is
related to the 4k screen (and possibly the GPU) I have, as it gets a lot better
when I lower the resolution to 1080p. It doesn't go away completely on 1080p,
but it gets a lot better. Also, it is mostly noticeable on the "slide back" and
minimizing the windows effects. "Slide back" either glitches before it moves,
or it is just straight up choppy (depends on the decorations), Minimizing
windows is the same, it pauses halfway for a split second then minimizes. It
even affects the experience on the web browser, because the scrolling of web
pages gets slow, too. This has happened on every single distro with KDE Plasma
I've ever used, so I guess that eliminates the "distro specific issue" possible
argument. Also, a side note, the "window decorations" section of the settings
has terrible scrolling. It jumps between scrolls, as if it gets stuck or
something, every time I scroll. Thought I would mention that, too, since I
think they are related. Please let me know if you need a separate bug report
for it.
STEPS TO REPRODUCE
1. Install a third party window decoration and start using the system
2. Switch to 1080p resolution and notice the issue gets a lot better.
OBSERVED RESULT
System slows down/chugs when changing window decorations to something that is
not default.
EXPECTED RESULT
Same performance (a little less is ok) when using third party decorations.
SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.23.3
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
Kernel Version: 5.15.2-2-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-8550U CPU @ 1.80GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
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