Hello,
Since HR measurement is often totally wrong while swimming, resulting on wrong load/calorie calculation. I decided to turn if off in the watch settings, thinking it will use the Pace/CSS to determine the load.
But no, as you can see, it uses the last measured HR, just before entering the water and use it as an average for the whole activity.
Therefore, the activity has a load of 0 and no training effects.
What is the point of entering the CSS if Garmin does not use it for calculating the load when the HR is off or unstable ?