I think the same DC. For players to be at their best, there needs to be some emotion in their game, but that sort of thing is a waste of energy. And it’s like he’s eroding his own confidence levels by worrying about something he can’t change, which is just added unnecessary pressure he places on himself.
So you’d think that when he gets to a point where that sort of thing doesn’t affect him, then he’ll be an even better play. It seems a matter of looking forwards, not backwards. It happened, move on to the next passage of play and make amends for it.