Well, I haven't yet found a suitable independent review of MBAM v3.x
to post here, but there is some interesting user feedback about MBAM v3.x coming from users in this
forum (DCF). For example:
From: Malwarebytes goes full Anti-Virus
I don't see what that has to do with the heuristic scanning.
Wraith, I'm very sorry to hear about your horrendous experience with MB3, but I'm most grateful to you for posting about it. You've saved me from moving to MB3 from MB2. One very weird thing about your present experience is that apparently it's the heuristic scanning that is taking so long. In MB2, the heuristic scanning occurs at the end of the scan and takes VERY little time, perhaps a minute or so.
My experience is that MBAM v3 seems to have become excessively RAM-intensive at times - e.g., taking up (accumulating) a lot of RAM whilst it is running the heuristic scan, and not letting go of it when done. Restarting it temporarily reduces the overhead. I feel sure that the developers would probably be aware of this inefficiency (RAM being a finite resource) and would be working to resolve the problem it causes. We shall see.
As to the suggestion in the above quoted thread that MBAM might make it unnecessary to have a separate AV tool (e.g., such as Windows Defender, which is now bundled with MS Security Essentials AV), I would recommend users retain both - as a belts-and-braces approach, for the time being, at any rate.
I mean, there may be some surprises. For example, in terms of future developments, I have often wondered what MS might intend for the Malicious Software Removal Tool
that they insert and run in successive Windows updates ... it seems to be rather good at what it does...