This seems to be a good point i think. From another board:
"The PS4 version generally performs well framerate-wise IMO. It's at a stable 30 fps more often than not. The stuttering is a separate issue. There are situations where the framerate itself goes to absolute shit though, and it seems to have to do with alpha effects. A dense forest full of detail can be perfectly smooth in good conditions, but add some rain and maybe a fire or two on top of that? Hello 20 fps. And it is just that, 20 fps. This game never runs at 25, it's either 30 or 20. Looks like a case of simple double buffered v-sync. Had they implemented triple buffering or adaptive v-sync I'm sure the overall experience would have been much smoother. So if they can make that happen, iron out the random stuttering and do something about the massive performance hit of alpha effects, I think this could become a very nice experience. It mostly is already, just not always."
I bolded the interesting part, so if really is a problem of double buffering i think it could be "easily" corrected without downgrading gfx (The gamersyde's XboxOne swamp video, without the fog, is not my idea of a solution, especially after the "downgradegate" on Pc about the 2013 trailers vs the final build, which has turned out with people trying to patch the situation with SweetFx and other ways to get a change in a grimmer colour palette, so now asking for a game without or with nerfed distinctive effects in order to get a better framerate should be as asking to play The Witcher in an always sunny Marioland. Absolutely no way, for me).
Aside from this, i ask myself if CDPR chose to go with double buffer and this kinda strange "30-20fps lock" on Ps4 because they thought that a relatively low, but constant framerate would be better, gameplay wise, than a generally higher but more fluctuating one, or if there's something else.
What do you think guys?
As for me, the gamersyde video of Ps4 swamp fight showed nothing i could call "unplayable", but it's just my opinion.