https://bugs.kde.org/show_bug.cgi?id=426412

Karl Ove Hufthammer <k...@huftis.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|REPORTED                    |CONFIRMED
                 CC|                            |k...@huftis.org

--- Comment #1 from Karl Ove Hufthammer <k...@huftis.org> ---
I can confirm. Nvidia user on a different distro. For me this also happens
after just logging in; I don’t have to run a game first. All animation is very
laggy/jerky (like the system is running at 5–10 fps). The easiest way to see
this is to start the application menu (Kickoff) and select a tab. The glide
animation when switching tabs is very jerky. Restarting kwin using

  kwin_x11 --replace &

fixes this, and the animation becomes silky smooth. If I run a full-screen 3D
game (e.g., Neverball), the animation becomes jerky again, and I have to
restart kwin_x11 for things to become smooth.

Operating System: openSUSE Tumbleweed 20201023
KDE Plasma Version: 5.20.1
KDE Frameworks Version: 5.75.0
Qt Version: 5.15.1
Kernel Version: 5.8.15-1-default
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-2500 CPU @ 3.30GHz
Memory: 15.6 GiB of RAM
Graphics Processor: GeForce GTX 1060 3GB/PCIe/SSE2

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