After the zwift update yesterday (Feb 25) my wattage would drop to 0 and then return to normal after a few seconds. RPMs never changed so I wouldn’t think it is an ANT+ issue. My setup has not changed in months. I have a wahoo kickr and wahoo speed/cadence sensor. My laptop is always close to my bike/kickr (within 2 feet). I rebooted my laptop and the wattage continued to drop on my 2nd ride. Really strange.
I have never experienced this issue before. Just wondering if anyone else experienced this after the latest zwift update?