Swimming Activity reboot

The watch keeps restarting and discarging the swimming Activity after ~40 min. I do a lot swim Training in the Winter and do Not track Distance. WE are doing a lot af technical Training. Therefore i am using the "Special Mode" within swimming. In this Mode the watch restarts after around 40 minutes. Anybody else? 

  • Yes my F265 resets when i end the 1st 500m drill. This has been happening since the latest update a few weeks ago. I contacted Garmin when started happening and they sent me a reburbished F265 but it is still happening with the replacement. I contacted Garmin yesterday and they said they will investigate it but they never e-mailed me a reference number

  • The same thing is happening with my Garmin Swim 2. After the last update (I think it was in November 2025), the watch turns off by itself. I'm testing it every day in Run mode. After 4 or 5 km it turns off. Important: the battery seems to be fine, because outside of GPS mode it stays charged for more than three days, which was normal since I bought it.

  • The same thing is happening with my Garmin Swim 2. After the last update (I think it was in November 2025), the watch turns off by itself. I'm testing it every day in Run mode. After 4 or 5 km it turns off. Important: the battery seems to be fine, because outside of GPS mode it stays charged for more than three days, which was normal since I bought it.

  • I was on the latest FW with 265 and now 570.

    I did a few lap pool of about 50 minutes of breaststroke.

    Did not encounter any reboot.