No, I don't think you understood. I have never had a problem with FPS drops, I would take a look at your code and make sure something isn't messing with your main loops. We really can't help without some sort of source code. I, as of this moment, have no clue what it could possibly be.
First things first: Can't really post source because it's pretty big and you wouldn't bother trying to understand it.
And how do you know this? I would be glad to look through the code because I could actually help instead of spending the next hour asking you how your game works. Don't assume anything.