I have 144 fps before I click on the mastery progress (can only upload 1 image, since im a new user)
After 37 and eventually 17
Major framerate drops in the menu after selecting the mastery of a nation
System:
AMD Ryzen 7 3700X 8-Core Processor 3.60 GHz
16 GB ram (15.95)
NVIDIA GeForce RTX 2070 SUPER
NVIDIA driver 496.49
2560 x 1440, 144 HZ display