[BanduraMaker]

I
There are only two reasons to use the SmothStepper.

I would add a third: your PP based control isn't cutting the mustard.

I submit to you this: Engineering Documents - Tormach Machine Controller | Tormach LLC | We provide personal small CNC machines, CNC tooling, and many more CNC items

I have personally had events where during certain 3D moves when in CV mode where I got motor stalling and massive missed steps at speeds that where 100% reliable in different programs.

I contacted smooth stepper on this point and they responded that the SS might help but they weren't sure.