Using the latest (364.72) I get this graphical glitch (see video below) in DX 12 mode, all previous versions of the beta have run just fine on standard settings on my laptop, i5 4210h, 12gb ram, GTX 860m gpu. DX12 mode is pretty unplayable....

DX11 runs just fine, no glitches, as does DX12 in a window. DX12 Full screen or in boarderless window glitches

I've yet to try the latest version on my desktop (GTX 970) and will update the post later this evening...

Update: the game is fine on my desktop PC in DX12 mode... Just my laptop that has issues...