DZIP is slow to load after open

[PolarBean]

When Attempting to load a list of DZIPs it seems the screen is gray for an extended period of time (more than a minute) before the chunks start loading.

These images are larger than your demonstration ones, is it possible this is causing an issue?

Heres a link to the folder on the data-proxy: https://data-proxy.ebrains.eu/api/v1/buckets/space-for-testing-the-nutil-web-applicat?prefix=.nesysWorkflowFiles/zippedPyramids/4imagetest/

Thank you in advance