From bleepingcomputer.com
Since the release of Windows 10 2004, users have been reporting performance issues and crashes when Malwarebytes 4.1 is installed.
In numerous reports to the Malwarebytes support forums since Windows 10 version 2004, the May 2020 Update, was released, users are reporting many problems with MBAM 4.1 installed.
These issues range from random freezes, general slowness, video stuttering, blue screen of death crashes (BSOD), or Windows 10 becoming unresponsive.