Finally saying that people don't 'actually' play GTA V because DoTA 2 and CSGO top the Steam charts is a strawman.
Guess what, the third most played game on Steam is GTA V.
GTA V actually does fairly well on Ryzen, according to TechReport's tests. The 1800X can do a solid 60 FPS, with no frame drops:
No CPU, not even the 7700K, can do a solid 120 FPS. They all have time spent beyond 8.3 ms. But the 1800X comes out in fourth place, behind the 7700K, 6700K, and 6950X. It just about ties the 5960X.