Hi,

I've been playing happily at 1920 x 1080 on my old Sapphire Vapor-X HD4890 with 32" Samsung TV as a display for a couple of month's since buying the game and had no problems.

This weekend I upgraded to a Sapphire HD7850 OC GPU so I could run the game in Ultra with DX11 Tessellation, first time I ran it was fine and looked great @ 1920 x 1080.

I went to play again last night but for reasons unknown the resolution has changed to 1280 x 720 and there are no options above that in the graphics settings.

I've deleted and re-installed the GPU drivers and uninstalled/reinstalled the game but it's still the same.

I've run out of ideas of what to look at next so any help anyone can offer will be greatly appreciated.