i only tried the first one, just because i already played the three mass effects years ago and i dont have time to redo the same games even in VR, too many new games to play :D
the first mass effect has buggy sky in G3D (lots of flickering) other that this distracting issue, it runs fine.
to change fov there is a guide
https://hamstergene.github.io/posts/2012-11-27-fixing-mass-effect-fov/
note that for cutscene you better switch to edgepeek mode or else your eyes will be hurt bad because of those “cinematic” camera angles.
and it’s better to play this game in immersive screen mode or even cinematic mod, that way you can see HUD when you need.
controller mod ? never heard of that, gamepad works fine, as does the combo keyboard + mouse.