Huge vTour Problems Loading

So, our vtours are getting huge, tens of thousands panos in a single project. Naturally, the XML file is gigantic and can take a minute or two to load. We use map integration and need all the geo information and can't use a solution that will lose that. In the past, we've simply broken up the vtours into 4-5,000 pano chunks, and created a map with links to each "area".