Cursor flickering and jumping to bottom left corner
Solution 1:
You say elsewhere that you have tried unplugging the mouse and just using the trackpad but you are still seeing the same symptoms. It's possible that the trackpad is the cause of the problem. Try disabling your trackpad and seeing if the problem persists.
You can disable your trackpad by going to 'Change your mouse settings', clicking 'Additional mouse options', and unchecking 'Enable TrackPad'