I use a 23 inch monitor (1920x1080 resolution) and window 7 (64bit).
Running FPVFreerider comes truncated left and right screen.
See link below.
Ask advice... ㅠㅠ
Here is an example from another game, you can google "set command line parameters exe" for more info:
https://www.lifewire.com/command-line-parameters-v...
(Basically, what is probably easiest is to righ-click the exe file and create a shortcut, then right-click that shortcut an enter the command line parameters in the correct place)