Can't do advanced edit for some reason, so I'll post my edit to the post above here.

I searched the forum for discussions on this issue but couldn't find any talk about MPG selection. Which is quite surprising! Maybe I searched wrong.

Also, what's the dealio with resolution? Most steppers seem to only like 0.001, 0.010, 0.100 and 1.000 as the options. But I can't remember what the figure is off the top of my head, but I doubt my CNC machine can do distances like those. Well specifically I'm curious about the 0.001. I didn't come up with this problem, that's from 5:40 from the final video that I attached.