My Vivoactive HR watch has developed an issue recently where it is fine after doing a reboot, but will become unresponsive after one or two day’s use, or even sometimes a few hours.

When the issue happens, I press the right button to unlock the screen and nothing happens, so I keep trying to press it and still nothing. Eventually it recognises one of the button presses and unlocks the screen, but by now it has queued a few instructions from button presses, and the time has frozen, like the watch is running out of memory, or the app that is running is unresponsive. The watch keeps trying to do things, but it’s always a few instructions behind and unresponsive. I managed to get it to start logging a swim last night, but when I checked, it hadn’t logged any data for the swim at all.

This issue has only started happening in the last couple of weeks. Strangely, it coincides with replacing the strap, which shouldn’t have any effect unless Garmin put some sort of protection against using 3rd party straps? Any fixes?