In order for you to play Farming Simulator 17 on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.9.1, 10.10.1, 10.11.1 or 10.12.1
Processor (CPU):
2.0 GHz dual-core processor or better
Memory (RAM):
2 GB RAM
Graphics Card:
Nvidia Geforce GTS 450 Series, AMD Radeon HD 6770 or better (min 1GB VRAM)
Network:
Broadband Internet connection
Storage:
6 GB available space