Hello for the past few weeks I noticed significantly lower HR readings during my tennis activities on Fenix7. At each training I'm having a moments when I'm breathless and tired and hr readings used to be consistently as below:
However for the past couple of trainings I get much lower readings:
I did make sure sensor is clean and watch is fit tight on my wrist. What seems to be strange, based on last HR graph, is the HR sampling rate is low (1 every 4seconds) as if the watch was in rest state when sampling may be reduced in order to save the battery.
Was there any software update done recently to Fenix7 that cause this issue?
Is there any watch setting that may impacting HR sampling rate during activity?
