Hi, i've upgraded from FR265 to 970 on Jan 10 and since than I observe discontinuous HRV measurement at night. See left screenshot. It's more or less the same every night, sometimes better a liite. The strap is tightenet well, hand shaved under watch. HR measurement is ok (right screenshot).
This wasn't issue with FR265 and it was clearly visible low HRV at start and much higher at the end. Now its jumping randomly.
(Measurement from FR265 - for comparsion)
Does anyone have similar experiences?
