We have also experienced huge increase in our data usage. I have used the xfinity data calculator on their website and entered ridiculous amounts of daily stream time, online gaming social media etc. According to their calculator with these ridiculous numbers I should still not be using 1 TB of data. I have called for assistance but NO ONE can answer why this is happening. They suggested changing our password which we did. The ONLY new change since this has happened is they sent us the newest fastest X1 modem. Ever since our data usage has gone crazy. They insist this new high speed modem has nothing to do with it. We do not have a 4K TV and have changed our setting to stream in lower resolution. So much for enjoying a nice clear HD picture.
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