I have been using Zwift since last winter (March 2014) without issue (graphics good, sensors fine, etc.). Yesterday (October 30, 2015 around 8PM MST) Zwift installed an update after which I began to ride through Watopia. For the first 30 minutes there were no issues but soon thereafter my heart rate monitor and cadence+speed sensor began cutting out intermittently which quickly became frustrating trying to beat lap times as my wattage kept dropping to zero.
This has never happened before with two different bikes (one using the Bontrager DuoTrap and the other using Garmin’s speed+cadence sensor). The batteries have been recently changed in my heart rate monitor and DuoTrap sensor (being used yesterday) so I do not believe this to be the culprit nor do I believe it is the sensor/magnet position as the heart rate monitor was cutting out which is in constant contract with my body. Therefore it seems plausible that this is potentially related to the latest update.
I was wondering if anyone else had noticed something similar. I will continue to investigate it on my end.