Why is this loading so LONG?


I hope you can help and understand what im asking. I have this site that i’ve been working on. I have these buttons that works, it loads each ‘‘scene’’ like i wanted to. I did that in order to create a preloader along with it, so it wouldn’t load the whole site up in the beginning, which might cause it to load too long. Well anyways, everytime i click on a button it takes too long to get to the preloader, why is that? Oh by the way only the 'services and 'contacts work right now. So if ya can, help me out please.

heres the link


thank you