EBB36 + Orbiter 2.0 - Buzzing - Not moving

I've recently upgraded my EVA3 with Orbiter 2.0 and EBB36 (these two are new).
Since I was having over extrusion after travel moves I suspected the extruder was skipping (and not retracting)

Opened the orbiter 2.0 (screw + spring) to see the gears and tested without filament just to see if the gears move:
» Up to 30mm/s - Works Fine, no skipped steps
» Over 30mm/s - Buzzing, no movement

I've tried to increase the current from 70% to 80% with no changes.

What should I look for?
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