Re: Mac mini M1 low FPS on fullscreen mode
50-60fps is about normal on any Mac, what are you expecting? You can't compare Macs and Windows PC, they are completely different and the game is certainly not fully optimised for macOS, let alone the M1 chips as the game is running through Rosetta.
I consistently get 50-60fps on my entry level M1 MBA in windowed mode but with all settings on high. Same M1 chip as you but the GPU is 7-core, not 8. What is the resolution in fullscreen when you play?
On Apple's site is says the Mac mini supports one screen up to 4k with 60Hz