None of those "advice" on doing anything with your AV (like disabling or even uninstalling) are supposed to be done/made. A software is supposed to be compatible with the system-every system. Such advice are just rubbish. I had a system crash on 3 PCs, all of which were caused by Avast. and I even checked whether it was Avast or something else. when I reinstalled win on every PC and attempted to upgrade from 1709 to 1803, I got the same BSOD and then to choose keyboard language and nothing else from there. After reinstalling win and installing Bitdefender, the update from 1709 to 1803 went cleanly and even faster than any previous installation of that sort. There is no reason for devs to suggest doing anything on our own end, but for them to fix the problem and to finally do something about the system load of this software. I've been using Avast for the past 8 yrs. I used paid as well as free services and I've always loved the AV, but it has become too heavy for the system and it burdens it unnecessarily with all the bloatware nobody needs or uses. Eight years is enough. In all those years, the company has managed only to add more bloatware and not tackle the mounting issues.
unfortunately, I've stoped using Avast bcs I've had enough of this behaviour. The fact that they have so many users does not mean they can do whatever they want and feel that 1 user is irrelevant compared to millions of others. When Avast fixes its compatibility issue with Win10, when they get rid of all the bloatware and decrease the startup time. Until then, my money will go to the competition.