does multiple scenes cause delay in the loading screen? even when you are just loading the main scene first? thanks
No, I don’t think it has to do with the number of scenes. It depends on how many assets the application has to preload in order to make the scene render properly.
As saif mentioned, the loading time is more so influenced by the assets being loaded than by the number of scenes itself. If you want to reduce your load time, I recommend you use Chrome Dev Tools Network tab to examine what assets are being loaded and at what cost, and take a look at our load time optimisation guide.