Well, I’m in the process of playing the re-tweak everything game, and thus far nothing has given me the balance of image quality and performance I had before the update. And like you, there is nothing special about my install or system.
They obviously changed something in the sim that has essentially broken it for me. I’ll keep messing with settings (instead of flying) in hopes of regaining some of what I had pre-update, but my real hope is that enough other folks in my boat will squeal loud enough so that Asobo does work to identify and fix the problem.
Again, just because you are not experiencing any issues does not mean that there aren’t any. Whether differences in hardware, drivers, etc. are ultimately at the root of it, the simple truth is that something Asobo did in SU5 has caused new issues for me and many other VR users. If they are going to mess with things that could be responsible for configuration-specific problems then they should at least make an effort to warn us, and suggest configuration changes that could help mitigate them.