https://thunderstore.io/c/repo/p/darmuh/FovUpdate/ Has the same functionality with better performance and frequent updates to fix issues.
Checks the window aspec-ratio every second or something and fits to screen.
Aspect-ratio is by default automatically managed, based on the games original aspect-ratio on your resolution.
Set Aspect-ratio fix on/off to false if you want to disable all aspect-ratio fixing. (e.g. to only have the FOV fix on)
Field of View is by default automatically managed, based on the current aspect-ratio.
Set Auto Field of View to false if you want the Field of View setting to take effect.
Set Field of View Fix on/off to false if you want to disable all field of view fixing. (e.g. to only have the aspect-ratio fix on)