Larian Studios Forums Divinity 2 - Ego Draconis (English) Divinity 2 - Ego Draconis severe graphical glitches

Has anyone experienced graphical artifacts so severe that it makes the game unplayable?
performance wise the game is ok but even turning the settings all the way down the nasty artifacts are still there.

I'm running Windows 7 x64
ATI Radeon HD4870 X2
Drivers are up to date
no other games have artifacts