Aspect ration is messed up on 21:9 monitor

I am getting issues with halo reach when playing on a 21:9 monitor, all the UI is tiny and everything feels like it is zoomed out. halo CE and 2A are fine.
graphics are set to enhanced, UI is set to edge, FOV is set to 100, picture is set to 3440x1440 full screen. here is a picture: Halo-The-Master-Chief-Collection-24-06-2020-18-24-39 — ImgBB

Is this just an issue with my settings or is it something else?