https://bugs.kde.org/show_bug.cgi?id=435037
Bug ID: 435037
Summary: Extremely slow/laggy animations
Product: plasmashell
Version: 5.21.3
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Task Manager and Icons-Only Task Manager
Assignee: h...@kde.org
Reporter: ch...@chrisnharvey.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
Created attachment 137113
--> https://bugs.kde.org/attachment.cgi?id=137113&action=edit
Latte Dock layout file
SUMMARY
Task manager animations seem to get really slow and laggy when opening/closing
applications (usually when closing the last application). The task manager also
seems to lock up for a few seconds too.
This seems to get progressively worse when I have multiple panels and more
widgets that animate. I have no idea what specifically is causing this, but it
does only seem to occur when using the Task Manager widget.
I'm using this in Latte Dock which seems to make the issue more noticeable
(probably because it has animations for opacity, which makes the issue worse).
I've linked to a video of the issue below, and attached my Latte dock layout
file. To reliably reproduce the issue, you will need to enable the same widgets
as me (this can be done using a KDE neon live USB too)
I'm using the Git versions of Latte Dock (https://github.com/KDE/latte-dock)
and the following widgets (also git versions):
https://github.com/psifidotos/applet-window-buttons
https://github.com/psifidotos/applet-window-title
https://github.com/psifidotos/applet-window-appmenu
STEPS TO REPRODUCE
1. Enable the attached layout file
2. Open and close some applications for a few minutes
3. Animations start to lag
OBSERVED RESULT
Laggy sliding animations in Task Manager
EXPECTED RESULT
Smooth animations in task manager
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE neon user edition (tested on unstable edition too, same
issue occurs)
KDE Plasma Version: 5.21.3
KDE Frameworks Version: 5.80.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Video of issue: https://www.youtube.com/watch?v=-RnCDYk7bjY
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