Snoke looks a bit artificial but I attribute that to the lighting and the sort of translucent look it gives to the character. Of course the purpose of this is that he’s a hologram (also I’d imagine why he’s somewhat desaturated). The detail on him is pretty good and overall he’s way better looking than any PT CG character.
Max looks great to me. Yoda comparisons are pretty far off-base and just people stretching to paint everything in the film as an OT rip-off.