Here is my problem: I installed the editvoicepack and added the euroharmony calls to the sounds. It works perfectly, but when I'm flying a 4 engine plane, the frame-rate drops to 6-7 so it is impossible to fly. When I turn off the sound, it goes back to normal... I tried lowering the display settings, but even at minimum the frame rate doesn't raise, so that's not the reason... Can anyone help me?