Cities Skylines 2 reportedly runs with 7-12fps on an Intel Core i9 13900KS with an AMD Radeon RX 7900XTX at 4K/High Settings.
To be fair with CS1 and mods like 81 tiles when you got a population of 100,000 the fps would tank and go around 20fps regardless of system spec or game settings. CS1 was responsible for me getting 64GB ram on the newer system i built at the time. I fully expect it again on CS2 but I come from a time where Crysis ran at 15fps and was great on my 7800GTX
If they wanted to start over without all the content from the previous game’s DLCs, the least they could do is ensure a polished and stable foundation to build it up again. Game publishers are getting way too blasé about releasing games in a shoddy state.
30 fps would be ok for a game like this although it seems that you need to have a pretty beefy setup even for that.
I watched city planner plays stream a few days ago and it wasn’t nearly as bad as what some of these articles are making it out to be. I know he has a beast of a system, but I was surprised how decent the game looked at 30fps.
I wonder how much this can actually be improved. It seems like performance issues on that level would require some pretty significant reworking.