I’m also having problems with Avast shutting down sporadically, on average about every 15 to 30 minutes at times. Not sure how frequently for the most part because there is no notification that it has dropped out. Only if I remember to manually monitor it do I find that it is not working much of the time.
When I try to do a system scan it can drop out w/o finishing, so I can’t determine, as yet, if it is a virus.
Is this a virus or a bug?!!!

Thanks!