Hi,
sound stutter is a common issue BUT the solution for everyone is to uninstall power assistant EXCEPT I never installed power assistant. My drivers are all up to date, I have done clean installation of Windows 7 64bit Pro and this problem still persist.
I have tried to: kill Skype and other uncessary programs, fresh windows installation
I have just the basics needed to run the computer, no bloatware.
Sound in Ubuntu is completely fine.
Thanks for your help.