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. You can also download your Matterport Spaces for offline use using the 3D Showcase for iOS app.