Have you updated to the latest nVidia GeForce drivers? I'm on version 537.42 but I know there are more recent drivers available.
Did a clean install a couple of days ago. Will double check for something newer. Thanks!
Update: Just updated with latest driver 551.23 (24 Jan 2024). Did a quick check in AH. FRs back up to 80-90 on the runway. Short flight around the pattern and everything was solid, no screen stuttering, FRs dropped down close to trees and buildings but, came back up to high 80s when looking up away from the ground. This is the norm I experienced before the recent FR dump. Encouraged but, the jury’s out until after a couple hours of play. Hopefully, this is that one simple thing………