I went in and turned on/off extensions to isolate the issue with Advanced Module Manager. I've got a pretty big website with a lot of modules, but it was running smoothly for a while with no issues AMM.
What do you think is going on here?
I'll include my superadmin credentials so you can take a look at things
Switch on the Debug mode and set Error Reporting to Maximum. And see what errors you get.
If you don't see errors on the page, check your PHP error log.