I have a new MSI GS60 running Win10 (as of today), but I first noticed the problem running the machine's native Win 8.1. When I try text to speech playback, the voices sound like Donald Duck, even when using "Narrator" in the Ease of use control panel. This is NOT speed of the speech, but distortion of the voice itself as in double the bit-rate, for example. I have used the native trouble shooters for sound, playback, etc. without success and have spent several hours searching the net for solutions. I found others with this problem dating back to the XP era, but none of the proposed solutions have worked for me. I had hoped it would go away with a Win10 upgrade, but no luck. I ran SFC /scannow, which found and corrected a couple of files, again without success. When I tried to set up Speech Recognition, I had been getting the message, "The Wizard could not launch", however that seems to have disappeared, yet the problem remains. I hope that I don't have a hardware problem, so I'll be grateful for any ideas that might lead to a solution. By the way, music plays back fine in MP3 format & .wav format. I have a 64 bit system, 16 Gb memory & x64-based processor (i7).