Mario Sunshine on a base M1 Air is perfectly smooth at 3x native (1080p), a little choppy at 1440p, and very choppy at 4k. No thermal throttling.
Apparently game emulation + virtual machines are the worst case scenario for the M1 running x86, so I'm happy with this ¯\_(ツ)_/¯
I'm excited to see what Dolphin running ARM + Metal API natively would look like