I have an issue where the real time accumulated XSS on my Garmin shows much higher at the end of a ride than what is reported after I upload the activity. Often the difference is about 10%. The differences are greater for hard group rides or intervals.
Yesterday’s hard group ride was a much larger difference, 235 XSS on my Garmin versus 162 XSS. I’m guessing the uploaded version is correct. Can anybody explain the difference and how that can be corrected?