This all started with the installation of Flash 11 and greater. (Never happened with version 10 or before) Anytime I watch You Tube Videos in HD, the Audio and Video will become badly out of sync. The video starts our fine, then while watching the out ofsync issue will occur. Then all video after it occurs will have the problem. I have to kill Flash, then open and close the browser to stop the issue. This happens on all browsers, Chrome, Firefox, IE and SeaMonkey. This does not happen if I watch 1080P or 720P You Tube videos with HTML5.
What I have done trying to solve the issue:
Upgraded to latest audio and video drivers
Upgraded to latest Flash Version, also tried uninstall and reinstall
Have nothing else open on Laptop when it has occurred
Turn off hardware acceleration
Deleted all Flash and Browser data/cache
Increased storage limit in Flash settings
I am at a lost on what is doing this.
System: Dell Laptoop 2.67Ghz
O/S, Windows 7 Ultimate
4GB Memory
Video Card: ATI Mobility Radeon HD 3670