Testing performance of a new NVidia driver using MSFS is like trying to stabilize your plane inside an hurricane. If you want to know, use another Sim or Apps or Benchmark tool. MSFS is unstable and show random performance which drive me crazy.
Yesterday I nearly found a pattern of reproducible cases and it involved my dog to be with me in the room, or not. It worked 2 times, performance was similar, but failed the third one 
All that to say the base is unstable, so you can’t say “Holly cow! it’s smoother with NV driver xxx, or xxxx!” or : “change this setting it work for me!” (even if I’m glad people try to help each other, great community) Because at next launch it will be different.
Even using a serious scenario not involving random or internet traffic the perfs change each time. Hitting ESC to cancel a fly and menu turn at 10fps, next fly and you suddenly win 10fps!
No, no, no, save your brain, relax and be patient hoping Devs find the root of those random perfs problems.
Just my 2c.
Edit : Mmmm, I didn’t try with the cat… 
