Hi BruJuve10!

Thanks for writing in and sorry about the discrepancies between your activities as shown on another platform and Strava. Wahoo and Strava calculate average speed two different ways. Wahoo uses the speed sensor data for your average speed while Strava uses GPS data along with some other calculations. The 'lower' average speed you see on your ride is because that speed is being taken from the total/elapsed time you were out on your ride, not just the moving time. So, if you were stopped or paused for awhile, that is taken into account as well. You can find additional info here.