Same here, this started happening to me in early May. Replaced the watch thinking it might be a bad battery. Got a new watch, worked great for 3 weeks, I rebooted the watch yesterday due to sluggish performance and now my watch has the EXACT SAME PROBLEM as before! I only get 6 hours at a time. Of course samsung has no response.... This is a class action lawsuit waiting to happen. Apple did something similar a couple years back to the iphone they actually slowed down the cpu speed of the old phones if I remember right and that resulted in a lawsuit.
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