I upgraded the sim to VR3 last night and found, like several others, that I seemed to get generally better performance. I can run in HDR now with no significant hit compared to non-HDR, and it does seem slightly smoother.
Today, though, I watched the video below, made all of the changes suggested therein, and then had a truly remarkable 2:38 VR flight (yes, two hours, thirty-eight minutes). The sim was buttery smooth nearly the whole time, and this was WITH me streaming it and having the YouTube chat window in the cockpit via Oculus Dash. The flight started at KSPG Albert Whitted, which usually hits my frames pretty hard, but I was running at 45fps throughout. Across the flight I had no “grey flash” moments, judders, or image freezes, save one (when weather re-loaded). Toward the end of the flight I could tell the sim was probably running at 22.5fps for a time, but given that I’d been running it (and chewing through VRAM) for nearly three hours I wasn’t surprised. And after a bit, it improved. Truly a great flight, and I highly suggest taking the 40 minutes to watch his vid.
And for those who want to see the flight, here’s the final 2:00 (it seems YouTube only keeps two-hours worth of streaming video). The flight was a dress-rehearsal for the cross-country I’m set to fly tomorrow real-world. One of the fun things in this flight: about six miles out from my first landing a YouTube watcher suggested via the chat that the airport was closed via NOTAM and that I had to divert. I did, and it was a great example of what to expect from a real-world examiner.