In fact, the game won't even start unless I force DirectX 9 mode. After that, it worked; thank you.

Unfortunately, the game itself is just another overpraised turn-based boredom. I'd rather replay Baldur's Gate 1/2 with a new build than playing that one. Yes, Baldur's Gate is also turn-based, but not the same way than Wasteland 2. So even though it works now, it just isn't worth my time.