For the last few weeks i am able to look at the power and HR during my 1hr ride and every 1-2 minutes the power will drop and my avatar will slow down and everyone around me will pass me and i will take at least 2x the effort for the next 5-10 sec to catch up. All the other data - HRM ANT+ / Cadence BT is perfectly synced. I have a Gen 2 Kickr and latest firmware and calibrated .
My ANT+ receiver is exeded with USB3 cable to within 1 feet of the Kickr
Please provide a solution or a fix on your end till then i dont think Zwift should charge full price for the service