I know from experience that the Ryzen U mobile chips aren't made for nearly any type of gaming. My HP Envy x360 has a Ryzen 7 3700U in it, and I'm lucky that it can even play SNES and Genesis games (I actually even notice millisecond stuttering on some SNES games). I tried playing Raft with a friend on it several months ago when I didn't have access to my main PC and....well, even with all settings turned down to their lowest, the game still ran extremely bad. Had to quit playing.
So yeah, no "real" gaming on these U's, I'm afraid. Then again, these are more "business" oriented so I think it makes sense.