Mine would be arbitrarily slowing down a character to maintain horror in a game. I get if there are reasons like age, injury, or location that could provide context, but don't turn my legs into molasses because you need to time the jump scare just right.
I really hate how it's infected the way characters talk in game. No one says "craft a knife holster" or whatever in real life, yet this terminology just permeates at least one interaction you'll have. "Collect resources and craft some equipment for your journey" my mentor says to me. Yeah, no one talks like this and it's not cute like in Metal Gear when the Colonel tells you to push the X button. It just pushes me away from the whole thing.