Saying they were aiming for 30 FPS was a mistake I think. When you play Skylines you want to admire the whole thing functioning especially if you have a decent PC and in 2023 30 FPS is just not acceptable. This is what you get however for making a complex simulation in Unity rather than actually making it from scratch like it should be.
That said, I am getting 30 FPS on a 100k pop map and it is playable once you get used to the occasional jerkiness of it. On my now 8k pop map I’m getting 60-90 FPS after following some guides I’ve seen online about tweaking some settings.
I hope they do eventually optimise this game better but from everything I’ve seen in other Unity games that suffer similar problems its going to be a long road to treak.