Matterport uses a global CDN (content delivery network) to speed up load time for heavily-visited Spaces.
The CDN is a global network of high-performance edge servers. Each edge server serves a particular geographic region and accelerates the load time for the most actively visited Spaces in that region.
If you're using a Matterport Space as part of a presentation, load the Spaces and walk through it a day ahead of time. This caches it properly in the CDN so the loading time during your presentation is short.