I have a Versa. I have the feeling for casual daily activity or light exercises (hiking, walking around) it's OK. The resting heart rate also seems to be mostly

I have a Versa. I have the feeling for casual daily activity or light exercises (hiking, walking around) it's OK. The resting heart rate also seems to be mostly accurate for me. However for more intensive activities it seem like it can't keep up. I guess either because of sweat, or because of delays during processing. When I went biking with it and going full-out, the heart rate stayed really low for minutes, until it went somewhere in the medium range (still lower than it actually was). When doing something short and intense like burpees, it might even keep displaying the low starting heart rate, even though the actual heart rate is on the highest side. My garmin with chest strap does a way better job for these kind of activities. However in total I still like the Versa and would buy it again.