Baseline (Widescreen) Solution & Issues
The FOV is automatically set to either 4:3 or 16:9 depending on the resolution you choose.
Gameplay is Hor+ in 16:9 and vertically (16:10, 15:9) or horizontally (Surround) stretched in non-16:9 widescreen resolutions.
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Eyefinity / Surround Specific Solution & Issues
4k UHD Specific Solution & Issues