Usually I use the same (I mean literally) system (currently Ubuntu 22.04) on every machine I use, and today the first time I attempted to use on an AMD machine (Steam Deck). I also have this severe performance hit (1-2 FPS) on Xorg OpenGL, but not with Wayland. Unfortunately KDE Plasma is just not Wayland-ready yet, so I'm stuck with Xorg right now.
The strange thing is the problem only occur if I set my primary monitor to the one which uses DisplayLink. As soon as I change the primary monitor back to the internal everything works fine.
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