I use Norton and I have not had a problem with it. I get it free from
Century Link. The free McAfee was horrible.
Maybe Norton has cleaned it's act up in recent years. My experience
with it was horrible but it goes back about 8 or 9 years. It bogged the
computer down and basically interfered with anything you tried to do. A
couple of my wife's computers got so bad they would barely run.
And, as previously mentioned, trying to purge the computer of any traces
of Norton, once installed, was a task. Required a third party software
package to completely get rid of it.