Ended up manually setting up the FOV. Seems the issue is coming from my ancient monitor forcing screen resolution to hit its cap.
Was about to post that roll was still inverted at all times, but I just realized opentrack is now in the background which explains the spam of octopus icons I get in my system tray later. they go away when moused over, but seem to have an issue closing themselves? Anyways opentrack has an option to invert roll tracking, so that should fix my issue.
Ok so tested before posting. Changing my opentrack settings made no difference. Even disabling roll entirely in opentrack didn’t change or disable it.
Found some forums with some similar issues for TrackIR itslef as a ARMA feature. Vsync and/or the game has to be at the same refresh rate or it kind of wigs out the tracking. Still have not resolved the fov setting issue, but I may just reset my ARMA settings and see if it works itself out. Otherwise I can try manually setting the FOV.