Loading very slow in Standalone Build

Hello,

I have a problem with the FPS that me and my team are making: we load levels (maps) with load scene async, the problem is that in the editor a map is loaded in nearly 30 seconds, while, after a build for PC, the same map loaded by the executable takes like 4-5 minutes to load!

We really don't know why there's this problem and why there's this huge difference between the same scene loaded from the editor and from the executable. (the load process is the same both in the editor and in the build).

How can we solve it?

Thanks,

Marco