With the Fenix 3/3HR, the "auto lap" feature would be overridden when you were doing a workout. So, if you were doing a workout that involved, say, a warmup of 1.6 km (four laps of the circumference of a standard athletics track), followed by 800 m intervals with 200 m recoveries (repeated 8 times), everything would be nice and cleanly delineated on the Garmin Connect website afterwards. Here is an example of what I mean: https://connect.garmin.com/modern/activity/1116785588.
However, whatever value is given for the "auto lap" feature on the Fenix 5x "overrides" the intervals that have been programmed to form part of a workout. So all you end up getting are km splits.
I presume that the workaround is to temporarily disable the auto lap feature. But it would be nice if this could be automatically disabled simply by entering "Workout" mode…
Has anybody else experienced this?