Best I can tell, it just isn't optimized at all. I was watching task manager and saw that this game was pummeling a single thread on my CPU while stuttering ingame (this was on a save with 60+ servants). If I reassigned the CPU affinity to just focus on the back half of my 7800X3D, it just picked a different single thread to choke out. I totally agree though, there is definitely the bones of a good game here.