I doubled my framerate in MWO in DX11 mode by setting my Crossfire mode to "Crysis3.exe". In DX9 this causes flickering artifacts, but in DX11 there are no artifacts, just higher framerates!
My setup:
i7 4770k
2x Radeon 7870 2GB
16GB DDR4 2400
Windows 8.1 x64 Professional
Catalyst 14.2 Beta Drivers
Try it out and post your results!
Edited by ShredBird, 18 March 2014 - 09:03 PM.