Hi Shuji - first time forum poster, and hopefully I can add some more specifics to help with further diagnosis of this issue.
I run Zwift on Mac OS Catalina (10.15.7), with a Kickr and Tickr - both most recent generation, and both paired through the companion app. I use the companion app to connect as I find the connection is more stable; likely because my Mac is usually also connected to a set of bluetooth headphones.
- The Kickr never drops.
- The Tickr sometimes drops, and then is unable to reconnected.
- After it drops, I can still see the Tickr in the Zwift Companion app bluetooth device list with an error symbol next to it, however I’m unable to reconnect without restarting both the app and game
Now - I think this is an issue with Zwift struggling to reconnect to the Tickr after bluetooth dropouts (which are just a fact of life with bluetooth). Here’s my logic:
- Sometimes I also connect the Tickr to my Garmin Forerunner 935 and/or TrainerRoad (also on my phone, running Zwift Companion and TR side by side.
- The Tickr signal will occasionally drop for 2 or 3 seconds (maybe once an hour - just part of life with BT).
- You can see this across all the apps/devices - Garmin 935, TrainerRoad, and Zwift all lose HR for a few seconds.
- However, it only seems to be Zwift that can’t pick the HR back up after it reconnects. As per my note above, the Companion App can still see the Tickr - it just can’t read HR anymore.
So my thinking is that it is something to do with the reconnection process after dropped BT signal.
Just to confirm, this issue occurs irrespective of whether I am also connected to my Garmin 935 and/or TrainerRoad. I have just noticed that when using them, it is only Zwift that struggles to pick the device back up.
Happy to provide more details, and I hope this helps in diagnosing the issue!