Mad FPS drops in Icefire Treetop room ?

Please tell me I'm not the only one experiencing that.

You already know what room I'm talking about.

The one with the freezing water pool that takes two thirds of the screen with the rightside elevator you keep getting smacked back into by the monsters above.

I don't mind the game being having its frustrating segments, but it would be really cool if it were only through gameplay elements and not losing three minutes every time for the elevator to come back.