I am now wondering if this had something to do with a few strange oddities I had on a 600K event over the weekend with navigating the route I was riding or was it just the normal bugged behaviour we have grown to expect from an Edge.
GPS Accuracy Issue Impacted Garmin, Suunto, and Polar Watches Over Past Week | DC Rainmaker
Just spotted I meant to post in the 530 forum, but it also affected the 830 and 1030 as well