In order for you to play Transport Fever 2 on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 16.04 or higher (64-bit)
Processor (CPU):
Intel i5-2300 or AMD FX-6300
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GTX 560 or AMD Radeon HD 7850, 2 GB VRAM
In order to play Transport Fever 2 on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 16.04 or higher (64-bit)
Processor (CPU):
Intel i7-4770k or AMD Ryzen 5 1600
Memory (RAM):
16 GB RAM
Graphics Card:
NVIDIA GeForce GTX 1060 or AMD Radeon RX 580, 4 GB VRAM