Otter said:
Because the "new" hardware runs backwards compatible. I highlighted PS5 Pro for a reason. PS5 and PS5 Pro do not share the same GPU and yet PS5 doesn't suddenly have shader stutter in all games without a Pro Patch. Similarly PS5 doesn't suddenly run PS4 games with shader stutter. |
PS5 Pro games are recomplied to take advantage of the PS5 Pro. This is why you see the "PS5 Pro Enchanced" tag on games.
PS5 games that are not recomplied don't take advantage of the new hardware at all, unless they have unlocked framerates, which causes games to suffer heavy frame time issues on base hardware. So most studios don't do it.