Why is my course so S...............L................O..............W

When I click the "DONE" button (see screenshot) at the end of a unit, it takes literally 4-5 minutes for the loop to process everything. There must be something out of whack or out of the loop. I have fresh WP install with nothing but WPMU plugins. I am using the CoursePress theme. It's all your stuff. (Except for SNIPPET plugin). Can you fix this?