Data looking weird when uploading Zwift ride on Strava

Hello community!
My zwift rides are uploaded automatically to Strava. However, if the profiles of power and HR look neat on Zwift and Garmin (you can clearly see well defined intervals), these profiles/curves look completely random on Strava. Averages, distances, calories etc are ok, but HR and power curves look nowhere near similar.
Anyone else facing the same issue? Am I missing something?
Thanks :slight_smile: