Performance-wise, I’ve been fairly consistent with the setup above (35-40 FPS@medium densed scenery, steam gauge A/C).
But this is not to say it is perfect, it could be definitely smoother, particulary when flying low and looking sideways or down under the wings. But that’s not the main issue for me.
I’m having trouble with the relative blurriness of the image and the overall lower resolution, which looks like 720p-1080p at best (on a very very large monitor though:-). I am having hard times reading smaller gauges and GNS panels, spotting airfields and other details in the distance and I guess that longer flights can put quite a strain on my eyes. But VR is new to me, I should have probably expected this.
Tomorrow, I am going to try virtual desktop, to see if the clarity would get better.
The worst thing is knowing that after trying VR in MSFS, I can hardly ever go back to 2D 
It’s such an amazing experience that I have no choice but to keep dealing with these issues and hope that the developers will improve it over time.