I am seriously so fed up of the HR accuracy and lag of my 265, spending so much on a watch and its not doing the main thing that its supposed to do.
I was riding my spin bike, I thought of comparing the HR with oximeter, as I was feeling the watch seems to lag. To my surprise the oximeter HR reached 145bpm when I went to 300 watts and the watch was stuck at 80bpm and slowly slowly it went to 125 then came down...
Garmin really needs to work on the HR thing through its software update coz if HR is inaccurate then the purpose of this watch is defeated coz all sleep data, HRV, RR is related to it.
Please sort this or there is no point spending 5-600$ on a watch just for amoled n gps...