Loading an asset in runtime by script freezes the screen

I tried loading a city map (less than 7MB in texture files) in runtime by pressing L. I tried loading by tag or enabling the entity. Both freeze the screen while loading for about 3 seconds. Is there a way to load an asset runtime by script without the freeze?

Here is my project.
https://playcanvas.com/editor/scene/1308171

Thank you.

Duplicate

https://forum.playcanvas.com/t/how-to-load-an-asset-in-script-without-freezing-the-screen/