Using 3840x2160 143.999Hz with v0.4.0
I had to amend line #33 in the options.ini file from 85 to 1 to make it playable, any other number higher then 1 was too fast and unplayable on bends.
Im not sure if that line is the correct line for corner speed setting but it seemed to work for me.
A suggestion instead of "Rival here" above cpu cars, a simple "Rival" would seem shorter and neater. either way the game is cool