The profile pictures in Teams of our users are not fully synced from O365. If you open for example the profile picture of a person in Delve the picture is sharp. In a teams call with exact this person the profile picture is blurry, so you can't even recognize the person in the PP. The person uploaded the picture in the O365-Dashboard. We can't find a reason, why this happens. (The profile picture was uploaded two months ago, so there's probably nothing to sync anymore)
Our users have Exchange On-Prem accounts and use Skype4Business and Teams in Island Mode. In Skype4Business the profile pictures are also very blurry. What can we do, so the profile picture is shown sharp in O365 and in MS Teams?