The laptime display is delayed by approx 2 sec after the mesure. The mesure is ok (pulse led), only the display is delayed. Could you display the lap time in realtime on the smartphone?
the measurement takes a second or two to compute and transmit. There isn't much delay in the time the measurement is computed and the time it's displayed on the app
So the delay came from the tracker computing and not from the bt or smartphone cpu?