[digif]

I dont know, they told me that, maybe vB or something with it
I asked him what he suggest, and he told me this:

Hello again, some scripts have "cache" plugins that can help alot - but I'm unsure if Your script has some modules or plugins that You can use.

I do know one Wordpress site that we had issues with, overloading a server due his site used too much memory and CPU when he had alot of visitors but when he activated a plugin called "wp-cache" his site didn't use much at all, so that was solved that way.