Hi guys!
Hope you all good! Now to the low fps it seams I fixed my fps! Now I can get all ultra max settings on 4K using TAA and scale up to 150%! My fps are solid 48-50fps min and max 75-78fps depend on flying altitude can hit up to 80+ fps, now I have caped those using 50% of my screen hz as I have 2k 1440p IPS 165hz monitor G-Sync! On the latest Nvidia drivers and those are debloted! Also worth to mention GPU set in max performance via Nvidia painel controle and all I have done was tweaking the traffic and airport vehicles and fauna and ships and other aí traffic sliders, my cars traffic I let it on 55% so nice to see cars on the roads at low altitude! Then the TLOD is set on 200% and DLOD is 140, and I now have nice enjoyment playing MSFS !
I also have clean the folder with 60gb of stuff that are numeric in the MSFS install folder 
and omg my sim just flying!
Worth to say that further performance improvements needed on MSFS by Asobo to improve GPU usage and CPU, but at least I can see my CPU 30-40% use and GPU 99-100% time to time goes down to 75-80% but other than that super! Can’t complain
Reminder of system spec:
CPU: I9 11900k @ 5.3Ghz all cores
GPU: EVGA RTX 3090 FTW3 Ultra V2 black - resizable bar activated!
RAM: 2x 16GB DDR4 32GB 3600MHz Corsair Vengence RGB PRO SL @ 1.35v tide custom timings
Board: Aorus Master Z590- latest bios
PSU: EVGA supernova 1000w gold
Monitor: MSI IPS 1440p 165hz G-Sync
OS: Windows 11 Pro all updates
And system cooled by EKWB custom loop