Maybe give it another shot or two, it's definitely a slow process to import. We have some improvements coming there in time but it's ideal at moment for smaller schemas and datasets.

You definitely seem to have some issues with memory usage, crashes my tab when trying to load that link on a device with low amount of memory (4GB).

Maybe a per tab memory limit. Step 11 talks about increasing memory.

https://www.guidingtech.com/fix-google-chrome-out-of-memory-...