I have a 0.9 step E3D pancake motor on the extruder.
Step Angle: 0.9°
Rated Current: 1.4A
Body length: 26.5mm
Faceplate: NEMA 17
Motor cable length: 1m
It's running but seems underpowered having used it on a Duet before.
Do you place the rate current in overides on in the tool board config?