I have recently started a fresh playthrough of The Witcher 2 in prep to play part 3 for the first time, and I am noticing that the voices are higher pitched than they should be, certainly a lot more so than previous playthroughs, Can anyone help me discover why this is happening and what I can do to fix it? Its driving me nuts. Everyone sounds like they have been sucking on helium.

BTW I am playing the game on Windows 10.