Hi @Tor_Eckman welcome to Zwift forums.
Shuji at Zwift HQ here. I looked at the partial log files from your most recent sessions. 4 of 5 displayed issues with your Bluetooth and network performance. Here’s two instances where those BLE messages indicate disruptions in the signal.
Bluetooth interference is common because BLE uses the 2.4 Ghz radio spectrum that many modern electronics use. These are some steps you can take to improve the BLE interference.
The network disruptions are most commonly WiFi issues at your home. Occasionally, they can occur further upstream between your ISP and Zwift servers. Some discussion of that here.
Something super-easy is to get in the habit of power cycling your DSL / cable modem, followed by your WiFi router.
You might try putting both the Apple TV and your smartphone on the WiFi router’s 5Ghz SSID instead of the 2.4Ghz one.
If you’re tech-savvy, you might also try changing the channel that the router broadcasts on to a channel that’s less crowded in your local area.
Lastly - are you running the Zwift game app (not the Companion app) on any other device? Having two instances of the game app logged in simultaneously will also interfere with the tread’s BLE signal.