Calibration stops at 3 kmph while at standstill

Hello,

When I perform a spindown in Zwift the wheel gets to a standstill within the timeframe. Zwift however still registers a speed of 3 kmph with the wheel completely stopped. What can I do to perform a correct calibration?

Kind regards,

Gijs

Same problem with Zwift stalling out at 1mph, though Wahoo Kickr has stopped spinning entirely.