I saw top rank players have mad hopping skills. It looks like CS 1.6 scroll-ducking. What I wanna ask is how are they doing it? By binding jump to wheel or something?

But I'm having this problem on all maps including the maps that I didn't have any problem on.

I was tweaking settings on launcher yesterday but seems like I fucked up as now all the maps are a lot darker and there are full black textures on random places. I tried to reset settings and remove Trackmania folders on userdata & documents but it's still broken. What should I do?