Bug#969258: nvidia-driver: Graphical performance drop in both XFCE and OpenGL apps since the nvidia-driver 450.57-3 update

[Andreas Beckmann]

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Does this help solving your issues?

https://askubuntu.com/questions/1230340/why-does-my-nvidia-graphics-card-in-combination-with-xfce-compositor-have-poor-p


Andreas