Norton 360 v6 - backup size

[Drivin'tooFast]

I have had this problem in previous version too, but the backup is multiples larger then the base file size.

In my case I am backing up about 300gb and even after a reformated by backup drive and run file backup, the backup size is over 1.2TB. Norton backup will fill my 2TB backup drive in about a month without significant file turnover in the base drive.

I would like to keep using Norton if the problem can be fixed.