I actually fixed it, just had to go into a game and rather than go into fullscreen, go into windowed, and you are only able to change resolution in a window to 3440x1440 while in a game and not at main menu, without it breaking.
-*fixed, TRY to make 21:9 work in fullscreen
https://workupload.com/file/ZP7WhXMTmZ4
TRY. no promise
throw to \Data\