Actual monitors res is 3440x1440 I use a program called borderless gaming to scale games without settings down to a 1920x1080 window so they look good in OBS. The games not supposed to run in 16:9 I reckon?
If I knew the game was made only for the 4:3 aspect ratio (Makes sense giving the graphical art style) I would've configured it for a 4:3 resolution. Game was still good though looking at someone else's video to see what the text was. Edit: What borderless essentially does it force windows down to a specific size. It seems to bypass game limitations. Tbh, might give up the ultrawide and go back to duel 1080p monitors. Will make things smoother.