Annoyingly Artlantis is very behind supporting the M1 chips, having experienced how slow Artlantis renders using a 5k Mac studio M1 ultra, you may as well buy 2 intel chip PC’s for the same price and network render to gain a better render speed. If your sole purpose is to render in Artlantis, don’t bother with an M1 its not worth the speed reduction compared to cheeper intel chips.
Artlantis does need to up their game, as other rendering software can both support M1 and GPU rendering. e.g unreal engine (Which is free and can render to 4k).