You should set "Delay per step" in a value between 50 and 200, or whatever works for you.

If you don't set this the motor will try and run as fast as physically possible, which results in it doing a whole lot of nothing because the torque is super low. I use around 150 or so, the docs say 200.

It might be good to default this value to 200 instead of 0 in the plugin.

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