I Subnautica. (Subnautica)

There was such here a problem. I downloaded a pirated version of the August v37088. The first couple of days everything was great, apart from a little sagging (on maximum settings), I sail on business and I hang up the screen black for a couple seconds, the game gives out a not responding and have to close it via error or Manager. Although the sounds work (they say the game continues)
Prior to this black screen no lag was observed, well teksturki progrules sometimes with a delay.
After a few such crashes, they happen randomly, can in 2 minutes after download can in an hour, my vidyuhi issues like (the Video driver has stopped responding and has recovered)
Vidyuhi AMD Raderon HD 5670