Quality automatically lowered on packaged app

Hello. =)

Today, i created a package of one ouf our project. Starting the exe, our application loaded as it should, with the expected quality. It works fine, no lag or anything.

But then, after a few seconds, the quality of some elements goes down for a reason i don’t understand

Lets say i start the exe, and stare at this switch :

After a while, boom, ugly switch :

I thought that it might be a scalability problem, so i tried to do what’s suggested in [this topic][3] but nothing changed. Is there a way to tell our app NOT to scale anything and just keep it to the quality we wanted it to be ?

Could it be something else ? Any idea of what ?

I removed a lot of things in the level to make it lighter but the problem’s still here.
Also tried to run the exe on another, more powerful computer, and it’s still becoming ugly. So i’m not so sure it’s a scalability issue anymore.

Looks like it has something to do with the lightmaps.

Plus, the problem does not occure if i play in viewport. BUT if i play in standalone game, it’s ugly right away and never becomes as it’s supposed to be.

Ok so it had to do with the “Texture Streaming” option.
Unchecking it solved the problem.

Any idea why ?