Digid

So, as most of you have already experienced, creepers tend to blow up. Are there any tekkit compatible server/client-side plugins/mods that can do anything of the following: [li]Stop Creepers from spawning[/li] [li]Stop Creepers from exploding[/li] [li]Stop Creepers from destroying blocks[/li] [li]Stop Creepers from destroying blocks placed by players[/li]

So this is the situation: When i'm running a server on my laptop, with me and a mate playing on it, everything runs fine. However, as soon as I load the same level in singleplayer (copy paste it to the tekkit saves folder), I experience gamebreaking lag. Is this because the SP mode takes more RAM to render the world than the Server needs? Or is it because Tekkit isn't meant to be used in singleplayer? Or is it something else? Also, how do I fix it?