More Data usage since the update

Since the last update I have a “huge” increase in data usage. 

It went from about 1-1.5MB to now 2.5MB per Minute even though there were not many on the course. When I cycle there are never really more then 200 online. 

Has there been a change as I don’t see why this has happened. 

out of curiosity, what time of the day are you riding that you only ever see 200 other riders online?

5am CET (central european time zone)

Does the resolution quality make a difference?  I use a dongle to have broadband in the garage and this month my 15GB data usage limit was exceeded - I don’t know if Zwift is the reason.