I am running an Nvidia GTX760 on an i7-4770K. I ran HD2 with x4 antialiasing and max everything else in the HD2 setup on same rig with Windows 8.1, many hours of gameplay with no problems. I don’t know if I had DirectX 11 prior to Windows 10 updated of last weekend. I can only confirm that it now runs with antialiasing [OFF].
In the Nvidia Control Panel, 3D Settings, I set:
Antialiasing – FXAA: ON
Antialiasing Mode: Enhance the application setting
Antialiasing Setting: 8x
Looks pretty good to me!