Avast with these new notification settings is now practically silent as notifications, it no longer shows those annoying popups and marketing notifications. Notifications only appear when it detects something. As for resource usage, it is excellent even on "old" PCs. At the moment on the system it is very stable and is not creating problems for me. The protection seems to be very effective and reactive, both from the tests that I have done in a very artisanal way and both by watching the tests on YouTube and obviously the official ones of AV Comparative, AV Test, etc...