Losing chunks of data on long rides

(Bruce Stauffer USMES WBR (C)) #1

Every ride that I have done that is over 100K loses data on the .fit file.  It also won’t auto upload to Strava when this happens.  Manually uploading to Training Peaks and Strava does work, but I will lose as much as about 20-ish kilometers or 40 minutes worth of data.  I’m using a Powerbeam blue tooth with MAC if that matters.