I'm not sure if the Windows version is similar but on the Mac version the icon of the Antivirus is animated whenever I perform a scan.

In case of a full system scan that takes over an hour, this becomes incredibly distracting and annoying if you're trying to do some work. I started to cancel weekly full-system scans because of it until I could leave the computer opened over-night. I don't think it servers any real purpose and it's just a "flashy" feature. It should be removed. A good antivirus should work in background.