Metered Connection
From Tootsville Wiki-Wiki
You probably do not want to use a metered connection to play this game.
What is “metered?”[edit]
If you have a network connection where you have to pay “by the gigabyte” or have a limit of “so many gigs per month,” you have a metered account.
A metered connection with a 100 GiB/month (one hundred gigabytes per month) can be run through in a couple of weeks by a few dedicated players sharing a connection.
Look into getting an unmetered Broadband connection to play Tootsville, or monitor your network usage very closely.