Earlier quoted context omitted.
I always fancied switching to track balls but never dared to jump. Can you be as fast as with a mouse with it? As precise?
I've managed to play slow-paced FPS'es with the trackball (e.g. PUBG) and remain - well, not "competitive" exactly, but not total trash either. You can generally dial it in for great accuracy but slow turning, or less accuracy but fast turning. But not really both at the same time, unlike a mouse. (since there you can your elbow for large movements, and your wrists for smaller ones) With the latter option, you would…
I move the width of the mouse to span two monitors yet I have no trouble clicking on a 4 dot cluster on 27inch 4k monitor (which would be equivalent of a single pixel on full HD).
Now I am not sure I want to use regular mouse with a PC and trackball with a laptop. In my mind this is either or choice.