Hi
I’m happy to share my personal experience-I upgraded from a 1070 to a 3070 and found the 3070 was OK for MSFS but inadequate for P3D which eats up 8GB VRAM in a jiffy.So I sold the 3070 and bought a 3090 (my specs are in my profile if you click my username) and find this gives very smooth frames even with the G2 with everything on ultra except the open xr multiplier which I have at 80.
Mind you I have had to use an older more popular graphics driver.
Hope this helps you!