Ran three material tests; one in each mode. 8mm squares, 20 steps, from 200-4000 mm/min. Fast has pronounced resonance on one axis from about 2000 up. Standard has a little from about 2800. Fine showed little to none, but traversing moves are painfully slow.
Y axis runs left-right, highest speeds to the left. The resonance seems to be coming from the X axis. I never checked the tension on that belt. That’s my next step.
