Bug 452634

Summary: KDE Overview Effect is laggy until any Window is dragged to left/top/right
Product: [Plasma] kwin Reporter: Orlando Rodriguez <sort465>
Component: effects-overviewAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate
Priority: NOR    
Version: 5.24.4   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Orlando Rodriguez 2022-04-15 03:57:41 UTC 
SUMMARY
***
The overview effect is laggy. After the animation for drag to top edge, left, right is launched, the overview effect starts to work really smooth!
***


STEPS TO REPRODUCE
1. Login to KDE
2. Launch Overview Effect
3. Open any application and drag the window to any part (just the animation is required, even the "dragged" action does not need to be completed)

OBSERVED RESULT
Just starting, the overview effect seems laggy, as if the FPS is lower than in the other effects or animations (I am using 144 Hz screens). Once I dragged a window to the left, right, or top and the animation of the black shadow is launched, the overview effect stops being laggy and starts to work as smooth as the other effects/animations. 

This is happening on my desktop with 144hz screens and Nvidia Drivers 570.60.02.

EXPECTED RESULT
The Overview effect should be as smooth as the other effects or animations, without any trick.

SOFTWARE/OS VERSIONS
Distro:  Kubuntu 21.10
Linux Kernel: 5.13.0-22-generic
KDE Plasma Version: 5.24.4
KDE Frameworks Version: 5.92.0
Qt Version: 5.15.2
Graphics Platform: X11
Comment 1 Nate Graham 2022-04-18 16:07:48 UTC 
Cannot reproduce with my Intel iGPU on either X11 or Wayland.

Does this happen on Wayland for you as well? Or just X11?
Comment 2 Orlando Rodriguez 2022-04-20 23:06:48 UTC 
(In reply to Nate Graham from comment #1)
> Cannot reproduce with my Intel iGPU on either X11 or Wayland.
> 
> Does this happen on Wayland for you as well? Or just X11?

I am not sure if the issue is present in my AMD laptop with iGpu (the screen is just 60hz), I am going to test it. For the moment, I see the issue on my desktop with an Nvidia 2060 Super with Driver (510.60.02).
Comment 3 Orlando Rodriguez 2022-04-20 23:07:25 UTC 
I'm using X11, not wayland
Comment 4 Orlando Rodriguez 2022-05-11 22:08:19 UTC 
I don't know how to add a duplicate, but I see this is the same bug with the number 448538 because when I launch the Task Switcher as it is suggested in bug 448538, the issue disappears.

*** This bug has been marked as a duplicate of bug 448538 ***