https://bugs.kde.org/show_bug.cgi?id=523754

            Bug ID: 523754
           Summary: Slow resizing when KWIN_USE_OVERLAYS=1
    Classification: Plasma
           Product: kwin
      Version First 6.7.3
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: compositing
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Created attachment 194783
  --> https://bugs.kde.org/attachment.cgi?id=194783&action=edit
Slow resizing of the editor, while the KWIN_USE_OVERLAYS is enabled

DESCRIPTION
When I was testing KWIN_USE_OVERLAYS=1, I noticed that resizing Zed Editor was
slow (shown in the two videos attached). So far I have only noticed that in
that editor.

STEPS TO REPRODUCE
1. Set KWIN_USE_OVERLAYS=1
2. Open zeditor
3. Notice that resizing is slower

OBSERVED RESULT
Slow resizing

EXPECTED RESULT
Responsive resizing to the cursor

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.7.3
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.1.4-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 6800HS with Radeon Graphics
Memory: 16 GiB of RAM (14.9 GiB usable)
Graphics Processor: AMD Radeon 680M

ADDITIONAL INFORMATION
I've been using KWIN_USE_OVERLAYS=1 for roughly 9 months and I don't think I
encountered this issue with resizing before, so it might be a regression.
Unfortunately, I don't know the specific timeframe where it was working
alright.

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