Lost ANT+ connections to my Garmin NRM and Stage Power Meter at the same time today. Two different sensors so clearly the Garmin 830 is the issue. I didn't experience this before FW5.10. Also, at the end of the course (was riding a sportive following a course from downloaded GPX file), the 830 froze, with a continual buzzing sound. Had to hold Power button for 10 seconds to reset, fortunately the ride data was safe.