I would like to do an open world where the player can enter certain houses, but can also roam through forests without having to have a black screen and loading bar through a scene change. So all things like houses, forests, rivers, lakes should be on the same area in the unity Scene. But so that this doesn't become a performance hell, I already know that it won't be feasible if I don't unload certain areas. e.g. if the player is where, everything should always be visible and loaded within 50 meters. Everything outside of the 50 meters should not be calculated in order to save performance. Is there something you can suggest to me and link from Youtube?