Screen Flicker

Sometimes when playing the screen will start to flicker, and by flicker i mean, blinking. Very bright.
Sometimes when opening your inventory, the screen will flicker in the way that the ui will dissappear for, what seems to be 1 game tick, and then the ui will come back up.

The game often flickers, it has its times where it flickers 20 times in a row then hold a 15 second break.

it starten happening after i got the latest version of the snapshot.