[ubuntu] Deja Dup - Backup Speed

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http://ubuntuforums.org – I'm trying to use Deja Dup (the default backup software) to backup some of my data. It seems to work, and the interface is simple and easy to use. However, the backup speed seems ludicrously slow. Is there a way to improve this? htop shows that only one of my processors appears to be working (though they alternate, one will peg to 85-95%, and then the other will) on the backup. I am backing up a lot of data (~2 TB), but OS X's Time Machine handled everyting nice and quickly (and that was on an old G4 machine). Originally I thought it would be just the first backup that would take for (Hardware)