Loss of sound during race

Hi all

Just wanted to pick all your brains, when I am racing in Chamionship mode during the actual race I loose the gear changing sound during parts of the race. Its fine in practice and qualy but tends to drift in and out during the race which can be pain. I am running the game in GPxPatch with the EAX update installed??

Any thoughts would be most grateful

kind regards
Paul

Sometimes I have similar problems. The and pause the game and resume again and the sound is back again. But I have this problem in all seassions and game modes, not only during races.