I agree, nice site but very slow to load.
Also, under the menu bar I get a large white space before the main page content.
There is also what looks to be like a star shape lucking just under the menu on the left. I can only see a bit of it as it disappears under the page content. Could there be more graphics hidden from view that is causing the slow load times?
The BetUS banner is quite a large graphics file. I’d look at what other banners they have and swap it out. It’ll help a little.