I removed Avira antivirus from my grandma low spec laptop and switched to the builtin Windows one. My suspicious was that it was constantly scanning the HDD and

I removed Avira antivirus from my grandma low spec laptop and switched to the builtin Windows one. My suspicious was that it was constantly scanning the HDD and running a bunch of processes that overworked the laptop limited capacities. Boot to Firefox was improved by at least 30 seconds, navigating the file explorer felt much smoother and security was probably improved as well. For home users, I don't see any reasons to use a third party antivirus nowadays.