With MBAM Pro running you would be best to exclude the complete folders of avast and MBAM to save on each from scanning one another, you’ll also find that if you turn MBAM off your system will spring back into action again as Malwarebytes will be what is using the most resources on your system, the 1.75 version was a lot heavier than previous version and the new version that is alpha stage at the moment is twice as heavy on resources again.

Try disabling MBAM from starting with windows, you can have it set to update and scan once a week for piece of mind