Creator being too slow - my clients are complaining

Creator being too slow - my clients are complaining

Here is the link to my form.

http://tinyurl.com/5qlln6

On a fast connection it does take 5-15 seconds to display, not all my clients are on a fast connection and the problem is they dont always see a loading or please wait sign.

What can I do apart from scrap zoho which I would rather not do!?

Thanks
Rav