I see IsmaelJorda already posted videos above which are all very good. My setup is i9-13900k/4090 so might be good to look at after those. In the video below, was testing with the F-15C in Syria map.
If you already have a 3090 and if you find it adequate for what you need it to do then you should be fine. My old setup was a 2080ti so I was -not- fine in VR.
Below is the video