I just got a new Watch Active 2 four days ago and I have to say that I am quite disappointed with its behaviour so far. The worst aspect so far is the HR monitoring during workouts. As soon as I start a workout the HR shoots up to 100+ bpm and never drops. I measured my HR manually and used a Mi Band 4 as comparison metrics. Both methods showed that my real HR would be closer to 80 bpm (which is reasonable given that I had barely started and was only stretching lightly) while GWA2 was around 120. I stopped moving and it took almost a minute for the GWA2 to drop and it still only dropped to 100bpm. I am very unhappy with the choice I made so far given that apparently, this 250€ Fitness watch works worse than a 30€ fitness tracker.
Is this a hardware problem or is this erratic behaviour "normal"?