I think this is the post I read explaining why.
I hadn’t heard about layer height being a multiple of nozzle diameter, other than maximum layer height should be 80% of diameter. Which I had already broken by printing stuff with a 0.4mm layer height using a 0.4mm nozzle. It’s my prototyping quality setting, for when I need to print a model I know isn’t quite right yet.
So I’ve printed both 0.05mm and 0.4mm layer height parts fine on my v1. The 0.05mm did take some extra effort to dial in the calibration.