I think my frame rate was ok, in most places at least. I only fly NZ, so I don't have those issues with large US cities / airports / areas that are known FPS killers (although there are some issues in ORBX ChCh).
Don't get me wrong; VR was fantastic and I could see the appeal, but not for me yet due to the aforementioned reasons. The other reason is I have a number of hardware devices that essentially become useless in VR, such as the Saitek radio, switch and multi panels, fuel cutoff switch, fuel tank selector switch and to a lesser extent the TPM (although that one is easy enough to find and feel).
Like I said, when the next gen come through I'll try again but not just yet. Of course, by then I'll need a whole new PC and I can't see a way of funding that without a significant change in circumstances, so who knows?!!
Even so, I would recommend to people to hire and try. It really isn't that difficult to set up; I learned a few things on the Vive Pro which I passed back to Graeme to put in his FAQ. By hiring, even with a less-than-optimal PC you'd at least get a bit of a feel for the concept. Try doing a virtual 'wing-walk' from the cockpit to the wing tip at 5000ft if you want to get the butterflies in your stomach fluttering!