Power lower than on strava and garmin?

I have been noticing that intervals.icu is consistently reporting lower average power than strava and garmin connect.

Moving time and kcalories are the same.

Intervals.icu

Garmin Connect

Strava

This hasn’t always been the case. Using the same device to record, the same power meter, the same upload mechanism (garmin edge + pm → garmin connect → strava → intervals.icu) I used to get the same averages.

Is there a setting that I need to change?

Thank you so much for your time. I am a huge fan of intervals.icu and super grateful for this amazing piece of software you provide!

If you need any more information, I am ready to send whatever you need