I started playing Microsoft Flight Simulator on my iMac (Windows through bootcamp) at the start of this month but only just about playable on 1080p and on the lowest settings.
The machine is not very powerful(8GB RAM, i5-7500 and 4GB Radeon Pro 560) and so hardly a surprise as it just about meets the bare minimum specs.
However I am awaiting my Dell Alienware R12 to come though in the next 1-2 weeks and that will have Core i7 11700F, 16GB RAM and the RTX 3070 and so here comes 4K/Ultra Settings/30FPS gameplay.