I've had some framedrops here and there on the Pro but for me, the resolution/artifacts etc are the least of its problems compared to SH2 Remake where it was a complete eyesore on some specific spots (start of the game with the puddles/as soon as you exit the hospital where it's raining).
I think it looks pretty OK for what it is, then again, this is a 80€ game (lol Konami you hacks) so it shouldn't have any to begin with.
Judging by SH2 remake and the recent MGS 3 Δ, people will have to wait a LONG time before any patch releases - and that's if Konami even bothers to begin with...