Yes, I've been having the same issue with putting up web browser-playable games for some reason, and even little changes such as a reduced amount of time for the Main Menu to transition to the game itself only makes a small dent in the loading times :/
Ah, that would be because you haven't found all the secrets yet (although the text doesn't come out whenever you've found each of them); the answer lies within your surroundings, and experimenting :)