In order for you to play Total War: WARHAMMER II on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
macOS 11.3
Processor (CPU):
2.0GHz Intel Core i5 or better
Memory (RAM):
8 GB RAM
Graphics Card:
2GB Nvidia 680MX, 2GB AMD R9 M290, 1.5GB Intel Iris Graphics 540 or better (see notes for more details)
Storage:
60 GB available space