Hi, i have a little desktop cnc. It has nema 17 motors (2.1 oms on both wire pairs) cheap 3 axis grbl controller no limits with ugs running it and all axis move very nice and smooth. It is skipping steps when running a gcode file like it has 0 power but when I jog it even with speed and acceleration high it has a lot of power even if i push on it when moving, the holding power is really high also. $1 is set to 255 so it is holding. I have set the driver current to 690mv, I got a new control board and tried that... no change, done every youtube setup tutorial, and I shielded my spindle wires. The motors and drivers are not much above room temp.