Basically I think it is a bit of disk hog.when it runs or updates it always shows the hard drive running at 100% in Task manager,
I disabled it in services and start up and just run it manually when I want and not when it wants.
Click on the little triangle on the Taskbar and click on customise.Make sure hide icon and notifications is showing on the dropdown box. That should stop it showing on the Taskbar.
Click on show hidden icons and if MWB shows right click it and remove it. Just did it with mine. Unfortunately I have to do that after every time that i run it which is not that often. I also have MWB not to run at start up.
I have another Anti-Malware program on my computer which is better than MWB so only use MWB if If I think it is needed.