You have to adjust your FOV in Falcon BMS\User\Config\Falcon BMS.cfg (or Falcon BMS User.cfg if you don’t want future updates to reset it)
What I did on my 3440x1440 monitor is to first set this:
set g_fDefaultFOV 80
set g_fMaximumFOV 180
set g_fFOVIncrement 1
Then, I went in-pit and started scrolling up or down slowly, counting one step at a time, until I found an FOV that works for me.
After some trial and error and some test flights, I finally found that for me, a default FOV of 95 works best, so I changed it in the .cfg and haven’t touched it since.