Anyone have major issues with wrist HR accuracy? I can never get accuracy readings unless I use a chest strap. Like now I manually measured my HR at 168 and the watch said 94. If I walk with hands on the treadmill railing then the hr comes close. I can't get my watch to go over 140 bpm. Looking to upgrade to the instinct but not sure I want to stay with garmin. Lately their products are not very reliable. Watches, GPS, cameras. Basically switch everywhere to garmain and now all the garmins are having issues. Back to the watch. Kinda useless if it only measures HR if your arms don't move.