My hardware:
Apple TV
iPhone + Zwift Compation
Saris/CycleOps Hammer smart trainer
Quarq DZero power meter
Polar H10 HRM
My pairing configuration:
Since I want to pair my PM, HRM and smart trainer’s controller on the Apple TV during workouts, I have to use the Zwift Companion as a bridge. This generally works fine other than my other HRM (Wahoo TICKR FIT) never being detected by the Zwift Companion app… other iPhone apps see it fine. The Apple TV sees it fine when pairing to it directly, but I digress. For now I am using the Quarq DZero for power+cadence, the Polar H10 for heart rate monitoring and the Saris/CycleOps Hammer for resistance control.
The issue:
Everything generally works fine other than ERG not initially working unless I unpair the Hammer and re-pair it after initiating the workout. Where things really go wrong is when I switch away from the workout HUD/tab to the map in order to kudos nearby riders. When I switch to the map HUD, all of my sensors immediately stop working. Switching back to the workout HUD doesn’t bring them back. The only way to re-pair everything is to go to the pairing screen, toggle back to the Apple TV direct pairing config, then toggle again to the Zwift Companion pairing option. Even after doing this, ERG control did not come back. The trainer’s resistance curve reverted to its unpaired default.
I’m not sure how long this bug has existed…I’ve only recently committed to doing structured workouts and for the majority of my Zwift activities, I just pair my PM and HRM directly to the Apple TV.
Yeah, I reported to Quarq back in 2018 that their Dzero power meter dropped Bluetooth connectivity in Zwift, but no fix in two years. With my Tacx Neo 2T I can tell Zwift running on Apple TV to pair with the Tacx for Power, Control and Cadence, then pair with the Wahoo TICKR for HRM. The Neo uses only one channel for all three: Power, Control, Cadence. Only issue is that the Tacx reports about 30 watts lower than my Quarq Dzero.
Another bug when using the Quarq Dzero for power in Zwift is that you can sprint to 600 watts, abruptly stop pedaling, and the Quarq power reading will be stuck at 600 watts forever while you are actually gliding. Outside, in real life, there is no such nonsense, so it’s obviously how Zwift interprets power from the Quarq that is buggy.
My DZero works with Zwift…this isn’t a DZero problem.
Also the stick-watts problem you mentioned occurs on most power meters, not just the Quarq. It’s an input lag issue with Zwift to help them cope with internet connectivity problems and such.
Eugene, other Dzero users report the stuck watts bug when using Zwift with the Companion App providing Bluetooth connectivity.
The Quarq Dzero meter works flawlessly when used for outdoor rides, paired to my Wahoo Elemnt Bolt computer, so it’s certainly a Dzero bug in Zwift only.
I own Assiomas, Vector 3s, Vector 2s, DZero, AXS (DZero,) Stages and 4iiii Precision Pro power meters. It happens on all of them. It’s a known issue in Zwift and it’s something people exploit in races frequently.
If you want to make another thread, go ahead…this thread was about a very specific issue that I’m not sure still exists.
Here it is 2021 and Zwift finally fixed the Quarq Dzero power meter bug, so now when I stop pedaling the power drops to 0, instead of staying pegged at the last wattage.