it's my guess that redfall is 30fps because it's a multiplayer title, and they were unable to get 60fps working on both the series X and series S. starfield will not have this problem as it's single player only. I expect it to have the usual quality mode or performance mode on the series X, and probably some lesser modes on series S. it's a bethesda game, so I would be stunned if they have a 60fps mode on the series S. and I'd expect as others have mentioned the series X to drop to sub 20 on occasion.