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
I mean don't fucking pre-order, dont fucking buy games as soon as they release...
It was well known as by release date that its not going to run smoothly, even with the absolute top personal hardware.