Muku

Windows 7

I'm not sure if I'm posting this in the right place or not. I had minecraft/tekkit on my old computer with no problems. I just upgraded with all new stuff, reloaded tekkit and now my mouse is weird. If I pick up an item in my inventory and move it, I can see my cursor get to where I want to place it before the item gets there by about a half second. Almost like a rubber band effect. I've looked through the options and can't figure out how to fix it. Any help is much appreciated.