Intermittent Violent Shaking of Axes

We are trying to set up our X-Winder 4X-23 for the first time.
It seems to be winding great for the first 30 seconds or so but then the motors start shaking back and forth and it loses track of its position.
This has happend both with just the 1 carriage axis but also with all 4 axes at the same time.

Video of 1 Axis shaking:
https://photos.app.goo.gl/4bMc9othAKr7SjmBA

Video of all 4 Axes shaking:
https://photos.app.goo.gl/SvfAw8we4AkcymYP6

The time it happends at during the build is somewhat random but seems to occur around the acceleration/decceleration points more often.
I've tried increasing the current from 2.6 to 3.6 on the Mandrel and Carriage axes and it still happens.
Motors are not overheating and are cool to the touch.


Any help would be greatly appreciated!

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