hello

when i play lomac everything is just fine until suddenly the ATC voice slows down considerably and the sound of the jets engines and beeps mess up, its more of a groan sound then the hum of the engine. it usually happens when i pull a high g turn in F2 view, or watch a missile hit a target. the only way to correct it is for me to restart lomac and this is very troublesome. How can i prevent this from happening?