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. 🙁