Besides the heart rate measurement frequency issue, I'm also seeing an issue with the stand measurement. At this moment, my watch says I have a count of 17 out of 12 hours in the stand ring. But I've only been wearing my watch for 15 hours so far today . . . Yesterday was similar, more hours with a stand count than I'd worn the watch (or been awake, for that matter). Anyone else seeing this behavior?
Watch on at 6:55am and get credit for 6-7 since you stood for over 1 minute in that hour. So at 7:01AM you will have 2 hours Stand.