Baseline (Widescreen) Solution & Issues
This game is wierd, it actually seems to support widescreen ratios natively but not 4:3 ratios very well, you will see what i mean with the screen shots
to set custom resolutions can be abit tricky because the instructions on how to do it only flash by for a split second after executing the game (if you have a fast PC)
Solution
Hold Ctrl after you click on the shortcut for the game to bring up the advanced video settings & you will be able to choose your resolution
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Eyefinity / Surround Specific Solution & Issues
4k UHD Specific Solution & Issues