I tried it at each setting, 1/32, 1/16, 1/8, 1/4, 1/2, and full. You could hear how nasty full stepping is, would vibrate/oscillate badly if used. Either way series to my surprise is a huge difference, step rate is minimal to zero difference as far as I can tell. MicroMo posted that paper that everyone quotes but there are others showing that Microstepping down to 1/64 show no difference. One was an actual test on the steppers and showed zero difference in torque when using microstepping. Makes me think Maybe the micromo Paper was about a specific type of stepper or something but When I went to read it again, it is behind a registration wall now.