The Switch load times are about the same speed as the PS4 original. The Xbox One is the slowest console in terms of load times. But even that’s not really that difficult for Boss Mode.
The two main issues I’ve found people have is attempting to kill Vidian, and just picking up stuff. You avoid these two, and the conquest is a piece of cake, even on the original consoles.
Obviously you’ve never played D3 on MacOS, intel mini.
Mac Mini is not a console if case anyone cares.
Thank you for confirming my original comment. You have not played it on console when the load times were the worst. And second, why would I buy a trash Mac? Who actually uses them for gaming? Oh you. 
now that I have a 2nd harddrive installed on my PS5. I finally installed D3 on my PS5 and holy smokes the load times are extremely fast.