I'm borrowing a friend's Vive to see if my not-great Geforce 1650 could do VR anything at all and I was shocked to see that VRChat runs really smoothly, and even defaulted to ultra settings. I've been thinking of buying it off him (he never used it in the first place) but if that's not on the table, then the Index would be my backup option. Can the Index's internal resolution be lowered to that of the Vive's in case my GPU doesn't get along with the higher res of the Index?