Weird.I think I have tried that before, but some UI is still cut off. All it does is make it bigger or smaller.
Edit: I should also elaborate that while the problem still exists in single player, it's mainly in split screen I have major issues with overscan.
Which console are you on ? I know that Xbox have a setting that allow to manually change the zone. I don't own a PS4, so I can't help you if that's what you have.