Using avast free, hardened mode set to aggressive. PUP detector activated.
I switch back and forth with silent/gaming mode on and off. 'ON' it does not give warnings, at least for PUPs. For example, I was downloading racetracks for for a video game and often the downloads would fail. Trying again with silent mode off, a PUP warning would pop up for some of the tracks.
With the setting 'off', as others have said, the advertising pop ups are few and far between. During the past 10 days there were two pop up's for Avast For Business Free. No big deal, gone in 5 seconds, or faster if with a mouse click. The Avast For Business pop ups were pretty big, approaching double the size of previous ads.
Cheers!