I´m running a Ryzen 2700X on 4.0 GHz along with 16GB 3200MHz (CL14) RAM and a Vega 64 undervolted. My game is set to use 2560x1440 144Hz, most settings on Ultra/High except stuff like antialiasing (4x) and some weird looking graphic effects.
I´m getting 6-8 Fps (13-16 when paused) in a park with 24000 guests, 23 coasters, 18 rides, 92 shops, 106 staff. Only using the minium required scenery/animations to get everything to 100% tho. The whole standard size map is covered, with a huge lake in the middle.
If I the game isn´t paused when im editing something, as soon as the game starts to calculate my changes I have to take my hands off the keyboard/mouse (any input - especially camera movement - will crash the game). Sometimes it will get stuck in loading screen too.
My PC is putting out a lot of heat when running Planet coaster. If I want to play for some hours I´ll have to keep a window open or it will get close to 38°C in my room.