There’s so many settings in it which are six of one thing and half a dozen of another. You can easily go round and round in circles. I’m at the point now where I think its basically pointless to keep on fiddling with things. The fact of the matter is Asobo will need to iron out bugs and optimise things and Nvidia have to bring out drivers for those of us with the latest RTX cards to get them running a bit better.
Once you get to a certain point with fiddling with settings its basically all pointless trying to go further with it until VR in the sim is a bit more established and refined.
For what its worth though from what I can gather from reading around, and certainly from my own experience, those settings in the Nvidia control panel have very marginal difference in the grand scheme of things. Certainly if you’ve got a 3080 or 3090 card. From a purely graphics point of view those cards will eat up and spit out anything the sim can throw at them. The weakest link in the chain is always going to be your CPU and motherboard power.
This is another great tutorial video and one of the best I’ve seen from a purely PC hardware perspective Microsoft Flight Simulator 2020 | VR Optimizations | Performance Improvements - YouTube