Data Shredder Kills Performance

I have a brand new installation of Avast Premier on Windows 8.1. I’ve tried twice to use the Data Shredder to clear unused space on a 2TB primary system drive. The problem that occurs is that many of my other applications such as Microsoft Outlook and Word stop responding. Even when I attempt to kill the application process, they all just hang. I only get to the “Cleaning Cluster Tips” in the shred process (18%) when things bog down.

Solution?

It’s most likely best to leave your computer idle while it is data shreddering.

Can you use the Windows scheduler to run it overnight? (I assume w8 still has one).

With a 3 TB hard drive, it takes a long time. So far each attempt gets me to about 15% in roughly 8 hours and then it all grinds to an unresponsive state. No other applications can be used.