it looks like xorg||cinnamon and vsync are not very friendly to multi orientation displays. Disgaea 2 (linux native) keeps flickering while in full screen mode
inxi -G
loaded: amdgpu unloaded: modesetting dri: radeonsi gpu: amdgpu resolution:
1: 1080x1920~60Hz 2: 1920x1080~60Hz

Solution: running the game in nested x server with xephyr
the weeb inside me is very happy rn
#linux #noWine #native #xephyr #vsync #gaming #disgaea