It seems that the way precise movement is handled with the mouse, is that it tracks the relative position to the mouse compared to your PC and the border of the screen. This ends up becoming an issue for people with high aspect ratios - such as 32:9 in my case.
The issue is that it is incredibly imprecise in my use case. It works perfectly in a 1x1 resolution however!
Maybe change the logic behind the character cursor movement by doing some math to check the aspect ratio of the user to scale the controlling modifier. ![]()