After installing ubuntu 20.04, I have a very laggy mouse pointer. It's only visual (ie: The pointer seems to actually move in the backend. I just see it jump around in a few spots.). Dragging windows is smooth. Custom mouse pointers, such as in krita, are also smooth.
It persists over nvidia drivers and intel video drivers.I couldn't test nouveau drivers because it broke xorg altogether and I needed to use recovery to fix my system. It also persists over trackpad, trackpoint, physical mouse, and drawing tablet. The problem is nearly completely solved when connecting a second monitor.
Anyone else who has experienced this? It seems like a really weird bug and I'm not sure where to start looking for a solution. Google has given me nothing that comes close to it.
Edit: I just found out the mouse works fine on the lock screen