We lost a customer this morning

We lost a customer this morning (requesting a refund) because the pages load so slowly. I've upgraded the hosting, but I think it's a problem with you guys.

If you go to the homepage -- http://www.finisjhung.com/Streaming -- there's a big lag while it clearly runs some script or something. Then it loads quickly once that is finished.

Is there ANYTHING I can do? I've installed a caching plugin (Quick Cache) to try to help matters. This could be a huge issue.