I finally downloaded this game after all these hours, damn you PSN... But USFIV looks good and feels responsive on PS4 and the loading times are fast! This game is great now. Definitely feels as smooth as the 360 version and the IQ is clear with good AA and AF. This is now the best version after those patches, what a turnaround, lol.
Another thing I think is that the D-pad of the DS4 probably is the best ever made. For me it beats that of the Vita, Saturn and Madcatz Fightpad. There is enough room for the thumb and the plastic feels just right without being slippery. I was spamming moves like crazy in the training room and I didn't miss a single one. Great!
The D-Pad one on the Xbox One controller feels like crap to me though, it isn't accurate enough and I hate that loud clicky sound. I also own a Xbox One and tried it with Killer Instinct. You could better use the analog stick (or a arcade stick of course).
The DS4 D-pad is criminally underrated on GAF! ;-)