I have a 49 inch "super ultra wide" monitor which runs at 3840x1080 resolution (Samsung CHG90).
This resolution is supported in-game and the game looks absolutely amazing for anything which is rendered in real-time - but there is a problem with cutscenes / pre-rendered videos as the width of the video stretches to fit the resolution, while the height of the video remains the same. This drastically changes the aspect ratio of the video, breaking any immersion held in the moment and lessening the overall experience as a whole since any cool details put into the scene are just obliterated.
Most modern games solve for this situation by a) picking the best pre-rendered video based on the screen height, b) scaling that video (while maintaining aspect ratio) to fit the height of the screen, and c) pillarboxing (the vertical equivalent of letterboxing) any additional width using black bars. This solves the problem described above without requiring every resolution to be rendered as a one-off.
Please add pillarboxed videos as a default, or at least allow this to be selected within the game settings menu. Thank you!