>>280758758
I play Boneworks on a heavily overclocked FX-8350 and it's... okay, most of the time. If you're using a Rift S i'd imagine it'd be playable, I'm using a Quest so not only is the computer having to run the game, it's having to do video encoding on the fly on top of that, slowing it down even further. 

It's definitely doable though, so long as you overclock like a mad cunt. Mine is at all eight cores 4.84ghz.