Vibration on Zwift Hub


Has anyone else had issues with this? I have had a Zwift Hub for a year and it has a vibration that seems to come up through the pedals and into the frame of whichever bike is on it.

Under load at higher watts it’s a drumming vibration and at high flywheel speeds, you can feel a vibration through the bike, when you stop pedalling.

To ensure it’s not the bike I have replaced - BB, outer chain ring, chain and jockey wheels. Tried 2 different bikes and swapped cassettes!!

For the record, Zwift Support are useless. Like robots, scripted waffle telling me how ‘worrisome it must be’. Days go by before another person emails back saying they are going to escalate it…

It’s been going on for months…. Any ideas??