The Sound it fairly constant. I would say that a grumbling sound was not far off to be honest.
I have tried different velocity and acceleration settings. The acceleration I have set from quite slow were I could hear the motor speeding up and slowing down then to the max acceleration I try to keep is max speed in 0.1s. Changing the velocity doesnt seem to do anything as I seem to be capped at a relatively low speed. I can make it go slower in the MDI but not faster.
The Drivers are QJ5045 2-Phase Microstepping Motor Drivers. I have attached the data sheet that I was sent.
The switches are currently set to 8 microsteps, Full Current, and the current choice being 4.2A