Does anyone else have an HR issue with the Fenix 5. Mine records OK and accurate enough for what I want, but after 8-15 minutes activity the reading nosedives to between 50-60bpm and stays there no matter how hard I am working. I have tried a Reset Default Setting and turning HR off and back on, did not make a difference. As a reference, as I sit at home writing this my HR is reading 54bpm?? Any suggestions or help appreciated.
