Hi, I've been almost exclusively 3d carving and sign making never noticed my sizes are out.

I cut a simple hose adapter a few times now and every time it's out but exactly the same amount, tried 3 different tools to cut it, from 1/2" to 1/8" end mills.

I'm out by ~1mm on 33mm hole, the holes are round and all 4 cuts are out by the same amount, tried it fast and super slow the same.

1610 Chinese ballscrew's from alixpress, direct drive, AM882's, 70v PSU, motors barely get warm after an hour of 3d carving.

DDCSV controller generated gcode in Fusion and vcarve same results.

What can be causing it and how do I solve it?