Cart is running extremely slow and causing duplicate orders

I have a client that is experiences several delays during the ordering process of up to 30-40 seconds imbetween each click. He says it’s causing all kinds of duplicate orders. I’ve checked my server and theres nothing wrong with it. Please help.

Also wondering why duplicate orders were even possible… Isn’t there a way to prevent that?

i got as far as the checkout page and everything seemed fine. i cant say beyond that but just thought id post that for you.

Thanks… but he's saying that it's only when placing an order…

Is ig google checkout orders? Im having the same issue all of a sudden as of a couple days ago. Seems to only happen on google orders. Itll assign up to 7 or so different order #'s for each one.