Apple tv calibration broken again

from time to time when zwift gets updates the calibration function gets flaky with my apple tv setup. i also noticed while testing the off road ride my power was wonky…kept dropping out… everything had been rock solid for months before this. so attempted a recalibration several times without luck (i.e. really hard to get to 23 mph and then despite coasting to a stop the calibration routine never quite…had to cancel out)

did anything happen with the latest zwift update? things seemed ok on sunday dec 15. i rode the repack route 4 times and things were normal…