https://bugs.kde.org/show_bug.cgi?id=471364
Bug ID: 471364
Summary: Sharing window with OBS causes periodic desktop
stuttering
Classification: Plasma
Product: kwin
Version: 5.27.3
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: dead...@dmu.gg
Target Milestone: ---
Created attachment 159849
--> https://bugs.kde.org/attachment.cgi?id=159849&action=edit
UFO Screen Test With Stutter
SUMMARY
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When sharing a window with OBS a brief stutter occurs every second,
indefinitely. This stutter affects my entire desktop, including cursor
movement. This issue does not occur when using a Screen Capture source.
It's worth noting that I have installed OBS as a Flatpak and so it would be
using the appropriate screen sharing portals to view windows.
STEPS TO REPRODUCE
1. In OBS create a Window Capture source
2. Select a window to share from the Screen Sharing Portal and share it
3. Observe a periodic lag spike occurring every second
OBSERVED RESULT
Using a Window Capture source, when a portal is shared with OBS I begin to
experience stuttering every second. If I open OBS and no portal is being
actively shared I do not experience any stuttering.
Sometimes it doesn't happen though, but I have not been able to reliably
reproduce this good behaviour.
EXPECTED RESULT
There should be no stuttering when sharing a window.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.6
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.10
Kernel Version: 6.3.8-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 3900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 7900 XT
Manufacturer: ASUS
ADDITIONAL INFORMATION
This was originally reported to OBS but was requested to be upstreamed:
https://github.com/obsproject/obs-studio/issues/9070
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