Baseline (Widescreen) Solution & Issues
Native support.
The game will always run at your current desktop resolution; in-game resolution setting is only used to lower the pixel count.
Negligible issue: the startup logo stretches (looks ok only in 16:9) !
Ultra/Super-Wide (21:9/32:9) Specific Solution & Issues
Native support.
Loading screens are perfectly anamorphic, but FMVs are windowboxed.
Cut-scenes are not letterboxed all the way to the right of the screen.
Eyefinity / Surround Specific Solution & Issues
Native support.
Loading screens are perfectly anamorphic, but FMVs are windowboxed.
Cut-scenes are letterboxed only on the left screen, and dialog text is offset to the left.
4k UHD Specific Solution & Issues
(The game supports UI scaling independently of rendering resolution, which might come in handy.)
Stereoscopic-3D Solution & Issues