Bug 459354 - Scrolling is extremely slow when many window decorations are installed
Summary: Scrolling is extremely slow when many window decorations are installed
Status: CONFIRMED
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kwindecoration (other bugs)
Version First Reported In: 5.27.9
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-09-18 21:30 UTC by Patrick Silva
Modified: 2023-11-13 19:03 UTC (History)
2 users (show)

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Description Patrick Silva 2022-09-18 21:30:23 UTC 
SUMMARY
Currently I have ~60 window decorations installed on my system. Scrolling all these window decorations is extremely slow, mainly on Wayland session.


STEPS TO REPRODUCE
1. have many window decorations installed on your system
2. open Window Decorations KCM
3. scroll the window decorations list

OBSERVED RESULT
extremely slow scrolling

EXPECTED RESULT
normal scrolling

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.25.90
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Graphics Platform: Wayland
Comment 1 Nate Graham 2022-09-22 17:56:40 UTC 
> Currently I have ~60 window decorations installed on my system
OMG

I can see how it would get slow due to the need to render a preview for everything. Maybe we can optimize that.
Comment 2 Patrick Silva 2023-11-13 19:03:28 UTC 
Scrolling is better now, but it is still a bit slow.

Operating System: Arch Linux 
KDE Plasma Version: 5.27.80
KDE Frameworks Version: 5.245.0
Qt Version: 6.6.0
Graphics Platform: Wayland