Using Heartbeatz with my Tacx Flux 2 I’ve tested with the Tacx Training app, Fulgaz and Rouvy. In all cases I get intermittent 0 readings on Heartbeatz. Other sensors are fine. Using Apple Watch 5 with watchOS 7.2 and iPhone XR 14.3. When it drops it’s usually only for a couple seconds and my watch is displaying fine. I’ve replaced the battery.
I have a Tacx dual Bluetooth/ Ant+ Chest strap and it’s fine.
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