I recently upgraded to an RTX 3070, runs OK. Average 25-35FPS, minor/moderate stutters before the latest update.
Settings on HIGH/ULTRA, flying in mostly rural areas, can’t report on big cities although I did check out London after the UK update and it seemed ok, 20-25 FPS but clear skies and in drone mode.
System:
i9-10900X
RTX 3070 8GB
32GB RAM
1TB SSD
40-50 Mbps connection
Gigabyte 34" 1440p Ultrawide monitor
EDIT: I steered clear of the OC version because MSFS is unstable with overclocking and I have no experience with overclocking or tuning