This is valid, I think he’s using the drivers from us but I’d like to be sure.
It is worth looking into whether steps are skipping, start by verifying what your motor model is, how much current it wants, and what you have configured on the DIP switches on the external drivers. Please provide that information here.
If the machine came an M2Nano style board and no external drivers (assuming you installed the drivers yourself), you should just be able to plug the X and Y motors into the LaserBoard itself (each motor output has a screw terminal to make this easy for you). For this application just increase the alpha and beta motor currents up to 1.2 amps and have at it. This is pretty much a “let’s cut to the chase and see if the external drivers are causing the issue or not.”
This is a difficult issue to track down and I have a very limited data set to work from, so will appreciate all the info you can provide.