Pretty strange that the things you said happened even im pretty sure that i did prevent those bug before, and about the boulder it was supposed to be turned off on after crashing scene you strangely you said it was still there.
To be honest i dont know how to even replicate or fixing this one specifically.
Yea i tried every way possible in spamming click thingy, but it still working fine except the dark foreground when you press C at the certain point which appear in gameplay.
It might be help if i know what you did or there are any screenshot about it and which version you play.
Unless hardware thingy might be the cause but im not confirmed about it, if it did i dont think i might know how to fix that either.
I would try my best for it.
