I have the same issue, my "conflict" is apparently because I also run MBAM.
I'm tired of waiting for AVAST to get off their ass and fix this,
Decided that if it isn't fxed in a month from now I will cancel my subscription/license for AVAST, deinstall it and stick witth MBAM and look for another compatible anti-virus/malware product..
I'll also be recommending to my over 100+ friends who use AVAST/MBAM on my recommendation to do same.
FYI - I've worked in systems IT for over 30 years
This is not a new issue and AVAST obviously don't caree about fixing it........