Here is an interesting article.

https://www.edn.com/why-microstepping-in-stepper-motors-isnt-as-good-as-you-think/

A very good read, I did know the microstepping is not a precise system, taking small cuts is the best way to avoid problems. On my mill I use a 3:1 belt reduction which cut the error by 3 but the down side is rapid movement is cut to a third speed.

Hi,
yes it is a good article. Microstepping was first proposed by astronomers trying to get better resolution, but as described beyond halfstepping does not result
in reliable increase in resolution, but what it does provide is smooth motion. That the astronomers did appreciate and still use. Regular fullstepping, and halfstepping result in to much
vibration which was upsetting the telescopes after each step. Microstepping reduces that big time.

Craig