Thank you to everyone who is working on this. I just received the JSS integrated steppers yesterday. Driving them from the external driver headers on a Duet 2 Maestro. Also will be used for CoreXY, in my case an FT6 conversion. That print quality example is concerning but I guess now that I have the motors I'll give them a try in the printer and see how it works for me. Running RRF 2.05, all I had to do was flip the enable polarity and the motor worked (though poorly for long move commands). Changed timings to 2:2:2:2 and now it works smoothly.