Well, actually I wanted to start with a joke like... "you will need a i12 with a 5080 ti"... but that would be very lame, wouldn't it?
A 2060 plus a i9 (no matter what generation) should be sufficient. VaM in its current state is very unoptimized in using the full power of your hardware.
No matter how much money you might spend, you would never be happy with performance.
For instance, it uses only one CPU core for many critical parts. Even with a new monster-CPU, you wouldn't see a big difference. This will hold true even with a new GPU. With a 3080 you would be able to do some more supersampling in VR or a somewhat higher resolution. You maybe even can have one-two light sources more or even a person more... but the real bottlenecks wouldn't be gone.
The best and cheapest way to solve performance issues is to avoid performance hungry content like unoptimized environments, hair with too many sections and high physics settings, unoptimized clothes with too many polygones, scenes with particle effects and/or too many light sources (try to delete every light source except one and you most likely will get double the fps), and so on. With every new person you add to the scene, you will double the performance issues.
Unfortunately many scenes here are made with maximal quality for showing off, or with desktop-use instead VR in mind.
Maybe it helps a little, that many (if not most) enthusiastic VaM users here are having performance issue. It is the no1 user question and the primary wish for the future all-new VaM 2.x version.