Ive just started running with my Polar H10 on the Forerunner but having an issue where it doesnt seem to detect the heart rate for the first few minutes of a run.
The strap has a full battery, when i select "Run" i get the connected notification (sometimes BT, sometimes ANT+ - it seems random as to which) before i hit start.
But after starting it seems to display no data at all for a few minutes before synching and working normally.
And so on. Ive wet the strap with a tap before fitting and in the Polar phone app confirmed its getting a signal but all my Garmin workouts seem to have this lag before it synchs and works.
Any suggestions as to a cause or fix?