Since updating my Venu 2 to the latest software (8.11), my Venu 2 now drains rapidly after an activity (with music and GPS) has been stopped. This battery drain will typically be about 6% per hour, whereas I will typically lose 10-11% per day without any activities. Turning the watch off and back on stops this battery drain after the activity. Have others had this issue as well? Is there a fix?