I would be really interested to hear if you try all settings as per my post and see how it runs?
I appreciate you have a 2600x so will likely hit the wall sooner, but now I can run max render resolution in oculus and I cant go back from that super sharp image!
EDIT:
I’ve just seen your debug settings with supersampling at 1.7, so perhaps you’re already there or better than my resolution? still, interested to hear your comparisons.