I Downloaded it myself and have about 5-10fps in the main menu on a RTX3090 64GB , 3950X. Most of the reviews say the same. Colossal Order are suggesting you should play on very low detail. I was a massive fan of the original having played Sim City since 1993 but I cant even get into this. It shouldnt have been released so early IMO
very odd, my friend says he has no issues (10700K - 2070Ti - 32Gb RAM - on SSD). Though he does have it on the MS store, wonder if there's a difference in performance.
I have heard in some reviews that playing on old hardware with moderate settings gives much smoother game play than playing on high setting with new hardware.