Sometimes I can tell when my current DM fudges a roll to miss an attack or reduce damage. He has a tell in the specific way he pauses and breathes before announcing the roll, then tries to hurry to the next turn, which only seems to happen when someone is in a life-or-death scenario, but “luckily” survives.
Should I let him know he has a tell? Will it be less fun (or more stressful) for him if he knows I know?
Yeah we always played the same, number one focus was on the story. So if a dice roll was likely to completely trash the story continuity, everybody kind of accepted a little fudging now and then. But only for that very specific reason.