I personally don’t understand the problems people have with performance. I’m used to playing Cities 1 at 15 fps with 200k-700k cities.
Cities 2 is a game with modern quality graphic settings, not a 2015 game. What do y’all expect? It’s not a twitchy FPS game. My Cities 2 city is only at 100k now though, with a 3060 btw.
Cities: Skylines 2 dev says it won't release paid DLC until performance "fixed to our standards" (www.eurogamer.net)