Since the release of Windows 10 2004, users have been reporting performance issues and crashes when Malwarebytes 4.1 is installed. These issues range from random freezes, general slowness, video stuttering, blue screen of death crashes (BSOD), or Windows 10 becoming unresponsive. Some users have reported being able to resolve the issue when disabling the ‘Ransomware Protection’ feature in Malware bytes. Malwarebyte has also released a Windows Beta version 4.71 in early June that appears to resolve this issue.
Source: https://www.bleepingcomputer.com/news/microsoft/malwarebytes-causing-performance-issues-in-windows-10-2004/