[Hummingbird] Hummingbird not operating properly

Been having issues with HB that are hard to describe. Built a site and migrated it to production. Tried to turn on image CDN and right away all kinds of problems with images and layout. The thing is, it worked fine on the dev server, but after the migration it didn't, so I'm wondering if its a key or something? another thing thats been happening is that the page itself is rendering oddly/jerky and not smooth….ugh, i know how generic that sounds. Just wondering if you can check on your end if you can see something that might be cause HB to not operate properly? Thanks!