I'm a full-alt kddk player, I really got used to it after a few weeks of playing but I still controlled my hands manually. A few days ago I started getting dizzy from taiko (vertigo). Yesterday I spaced out cause of that and noticed my hands are pressing the correct key colors despite me not directly controlling them. Now I'm working on always playing like that, to do it I have to space out a little and not think about anything, if I think about pressing the key manually I usually confuse the color. As a bonus, I almost never get vertigo now and when I do it's insignificant because hands press the buttons themselves. Does every top player do it like that?