The step counting and stand tracking has been about 50% accurate since I first got the watch in May but the last few weeks it's gotten horrible like 10% accurate. For example tonight I walked for 20 minutes and I was given credit for only 200 steps. Another example is on Sunday I was in my kitchen for approximatly 30 minutes preparing dinner (chopping chicken, vegetables, and general movement) and at the 50 minute mark I get the buzz and the watch says it's time to stand. WTF do you think I've been doing for the last 30 minutes? I've calibrated the watch multiple times, reset the watch, and nothing helps. Anybody else having the problem with activity tracking getting worse over time?