Website very slow when I import users......

Hi There

I am using Joomla 2.5.4 with the latest CB Subs and CB.

I have pages on my website that calls CB users and on their profile I have set up a few Fabrik Tabs to display different Fabrik Lists.

As soon as I imported 300users into the database(CB tables) then my whole website takes very long to load. With no user it's works 100%. Surely CB and CBSubs can handle more users than that.

Here is a link to the page :
www.golfhubble.com/index.php?option=com_comprofiler&task=userprofile&user=47&Itemid=237

Greetings Henry