That problem is with me too for the past 3-4 month. It was usually happening after the 1st km and it was not that much of a pain.
Yesterday my training was ruined as I was not even able to track the intervals timing. I had like 5 glitches. After 1st km, then after another minute, then after 3 minutes. I restarted the watch and it managed to record 6:30 minutes. Then I just stopped trying and it recorded the rest of my training as automatic activity for the remaining 12 minutes. On complete other point the integration with Strava is not working correctly for months now, I usually extract GPX from SHealth, transfer it to a PC and upload it manually to Strava to get the correct results.
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