Is there way to make a loading level faster beside level streaming?

hi i am working with a team , but i am not experience this problem, but it mostly my team mate who experience it come to paying the game for the editor and when enter the menu screen to load the next level take more than a minute for them to load for them, but for me it take under 10 seconds to load it. why is that? Also is there a way to optimized something to make the level load faster,beside level streaming?