For me it only happens when my motors hit their top speed but only noticeable when i board is locked to lower speeds. When i have my board at full speed and i ride with it, it doesn’t appear. It does not have any impact on riding or the riding feel.
Unloaded ≠ loaded.
This was my observation back when i tried to troubleshoot it.
@BornBoneless have you since ridden your board? (Regarding the same crackling noises)
@NewNoob I’ve been riding like this for over a year now and it has not caused any problems.
What you can do is try the different firmware versions (Especially the stock Unity firmware and pre-5.01 Firmware if available for the unity.
Just make sure everything is working fine before you hit your top speeds.