Maybe but I think I may just made it too hard, I have no problem beating it since I designed it after all. I could turn down the speed a little bit for normal and easy or a option shows up to slow it down after failing enough time. But if you think that may be teh case you can try the option menu, there is an option to lock the game to 60fps.
Update: I added a option to slow boulder that will show up after losing the race for certain amount of times. It is include in the new patch!