Definitely sounds like a Mach4/SS issue.Mid cut the steppers simply stop moving. Can’t hear anything resembling chatter or missing steps. Mach4 then simply stops moving ALL the axis – I can still disable, enable, hit the jog buttons, and even change settings – all looks ok but will not jog. No error in Mach4.
If the motors stall, they'll make a loud "Grinding" type noise.
Neither Mach4 nor the Smoothstepper will know if your steppers stall, or are heavily loaded, so this is most likely just a coincidence.The issue only occurs when I’m pushing the machine a bit.