Large Courses Not loading in Chrome and Safari

We have a really odd issue where large courses created in Lectora will not load in Chrome or Safari. They work fine in IE and Firefox. We are using Moodle 2.3 as the LMS. The course is 125 MB zipped, and it always hangs on the startup screen in the popup window. Small courses do not have this issue as I have tested several around 5 meg.

If anyone has suggestions, please let me know. We have clients that are very unhappy at the moment :(