Avira Browserschutz für Firefox - Download - COMPUTER BILD
This is how an add-on could impact your browsing performance, although the testing browser is chrome but all the add-ons are available in firefox so difference wouldn't be much : r/firefox
Avira Browser Safety VS Mozilla Firefox - compare differences & reviews?
Avira Browser Safety | Get Easy Step by Step Guide
How to Uninstall Avira SearchFree Toolbar from your Computer