does anybody have any issues with erratic steppermotors?

does anybody have any issues with erratic steppermotors?
I’ve tried tuning the stepper drivers to no avail. What voltages do you guys use?
Currently .6v here

Not me. Where do you tap to measure stepper voltage? (I’ve never even opened the base:-) 0.6V definitely does not sound right unless the stepper is in stopped state.

stepper is in resting condition. You measure it on the stepper drivers.
My motors suddenly are going haywire so i have to try to resolve this issue one way or another.