Ideas for a solution to this...?

I have s2member installed on my site, and the loading time of the site has slowed right down.

It's taking around 10 seconds to load with s2member activated. With s2member deactivated it's typically 1 to 2 seconds.

I've tried deactivating all plugins except s2member, and this doesn't help -- so I guess it's not a conflict with plugins.

-- I could use a different membership plugin. I don't know if this would do the trick. I looked at the speed of some wishlist member sites -- they didn't seem very fast; though some were a bit faster than mine…before I look into setting up another membership plugin, which I'm not sure will sort this, I want to see if there might be a way to deal with this keeping s2member.

-- I considered copying all of my site to a different domain that doesn't have s2member installed, so people can sign up on a faster site -- but the PayPal button that works through s2member seems to only work when it's on the member site.

-- I could set up a squeeze page, and offer membership through emails once people are on the list, but if possible I want people to see the main product on the landing page, and preferably be able to sign up for it there. (There is also a free product / list to sign up to on the landing page.)

This is the site: How to Write to Persuade and Sell

Thanks