Not sure if this will help anyone else, though the frame rate hit I’d experienced after this latest update was mostly eliminated after removing the frame rate cap in the Nvidia drivers. I’d had it set at 30 based on optimal performance before the update. Without the cap, I’m seeing improved/smoother performance in both VR and standard flight.
Still have some of the other stuff that’s been reported, including having to constantly retrieve the mouse using the Win-Y key combination, but at least the gameplay is a bit more tolerable now.
As a disclaimer, I run the sim on an Alienware m17R4 Laptop with a 3070 series Nvidia GPU. OpenXR is set at 85, and I adjust the in-game scaling until I get close to my Reverb G2’s native resolution (approximately 75% in-game).