Garmin Workout Interval Timer Slows

I am using the Xert CIQ Player on my Garmin Edge 1030 (v3.60 FW) and have noticed during specific intervals in an activity, the workout timer becomes slow. What is supposed to take 3:00 min to complete the interval, for example, is actually 4-5 min of clock time. The last activity I did today, SMART - Revolution has a total duration of 53m 53s, but the logged workout time uploaded to Garmin/Xert was 1:00.21, a full 7 min longer than the planned workout time. This gets brutal on high effort intervals, that end up taking 1.5x -2x longer than designed. Any ideas?

Nevermind… by design.