Hi Rakantor,
This content doesn’t contain any DerivedDataCache (DDC) included with it, so the first time you load the asset, whether it’s the texture, mesh, or level that contains this asset it will take a while (depending on system specs) to write this DDC information.
Once that is written you’ll be able to load this asset more quickly each time without the wait. This content also comes with the express warning that it’s meant for extremely high-end systems and even still will take up to an hour to load for the first time. This warning can be found with the assets description in the Learn tab.
I hope this clears up what you’re seeing here.
Tim