Currently in the exact same position as you. I just built a brand new system, 7900 xtx, fresh windows install along with latest drivers. I purchased a Reverb G2 (V2) as well and I am having the same SEVERE stuttering as well. Would be nice if they didn't completely overlook VR performance before even releasing the card.
Not a huge fan of sitting here and hoping a fix will come out soon.
VR problems with the 7900 series are quite known and also mentioned in the driver release notes. Actually that is the only reason I signed up here! So, please AMD, fix the VR issues! I'm waiting since the release for that, but my patience crumbles slowly. I don't wanna let team green win!