Hey guys. I'm having a problem when I use direct x 11 for this game. It gives me a black box around the outside. So my image is actually alot smaller than it should be, but this only happens when I use direct x 11. I'll list my pc specs down below. Does anyone know the cause of this? I'm using HDMI cable to connect my monitor to my pc. This is the only game that I know of that does this. Ohh and I updated to latest driver as well (11.6).

Thanks

PC Specs:
Core I7 860
MSI P55-GD65
4 GB RAM DDR3 1600
Sapphire ATI radeon 5870
Corsair 850 Watt PSU