Random black flickering on steam?

[Nuke Defect HD]

I really am annoyed as it is EXTREMELY annoying as it randomly flickers black at random intervals from startup to when I finish. This is the only game I have come across to do this. When I first started up the game it said it was corrupt so I re-downloaded it and after that it still flickered. Any help would be appreciated.

N.B

I read somewhere it said to delete the collision thingy. That didn't work at all