Site Moving Slower After Plugin Install

Hello,

I am really enjoying all that your plugins have to offer; however, after installing about only five of them, my website is moving even slower than it did before the install. I am more than positive that it's more of a configuration issue; I just don't exactly know what and how to configure them. I am leaning more towards the Hummingbird plugin as being the culprit and how it is effecting the Javascript. At your earliest convenience, could you please advise me as to how to get this fixed, as soon as possible. I think my website actually stopped responding.

Thanks!