If just using the Mac Mini integrated GPU, I don't think it would work well, the game needs a lots of graphics power.
It's running fine for me using an eGPU (vega 64), but thats when eGPU + bootcamp are working 🙂 its a bit hit and miss, not sure I could recommend getting eGPU for bootcamp. My eGPU has worked well over last few months until new year, and then took 3 days to fix, its difficult to maintain.