Showcase v3.0 presently has a bug wherein only 1k tiles are served when a tour is loaded.  Resizing the browser window or zooming in will initiate load of 2k and 4k tiles.  I added a fix a while back to this bug that would automatically resize the showcase frame to 99.9% then back to 100%.  This fix stopped working and I’ve fixed the fix 🙂  I’ve also reported it to Matterport.

Premium is going to be available on September 30, 2018.  I’m still working on the account system.  🙁