Touch detection performance issue, iOS

Hi,

I'm experimenting with compiling simple app to use on iPad. The problem is when I try using touch controls performance drops significantly. FOr instance I render 10 bitmaps and control one movieclips rotation with a slider. When I touch the screen and move my finger the application freezes for a moment, skips frames. The more rapid my swipes are the longer freeze is. Am I doping something wrong? Or maybe it's the iOS compiler/hardware taht is at fault here?

My first thought was that sampling touch input has very high priority and it chokes the player but I can't figure out how to lower the sampling rate so I can't check this theory.

Any kind of input is much appreciated I reached a dead end here.