The first thing I noticed when I moved from my 4790K to my Ryzen 1700 is how smooth GTAV was compared to before. I didn't previously think it wasn't smooth, but Ryzen made it actually smooth. An fps number is not the whole story.
Ryzen win.
I feel I sold my 4790K at the right time.
Had a conversation very similar with someone about another game who has just upgraded to a 1700X - the smoothness in games they are seeing is more to do with the fact they just reinstalled their OS and currently have half the clutter going on in the background than about the actual CPU :| which I demonstrated with my gaming PC (4820K) which is running pretty lean and I shut most stuff off if gaming. Fair enough if people have a different approach and the additional cores, etc. helps to reduce the background activity and so on but the comparison might not seem as black and white as it seems.