Baseline (Widescreen) Solution & Issues
Native support. Select your aspect ratio (4:3, 16:10 or 16:9) and resolution in the in game video options menu.
15:9 is unsupported; 1280x768 + aspect ratio 16:10 will result in a slightly stretched game. Scope sights stretch. FMVs and loading screens are "Hor+" i.e cropped in all ARs lower than 16:9.
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Eyefinity / Surround Specific Solution & Issues
Download the appropriate FOV patch for your version of the game (retail or Steam) and follow the instructions provided with the patch.
The FOV patch fixes the game for 3x5:4, 3x16:10 and 3x16:9.
Note:
All HUD and UI elements stretch.
FMVs and loading screens are Vert-.
4k UHD Specific Solution & Issues