YouTube Voice and Video not in sync?

[Bammeh]

When watching videos in either Safari or Chrome in DP8, there is a very noticeable lag between the audio and the video.

Has anyone else experienced this problem?

MacbookPro6,1 running OSX 10.10 DP8

 

[PeterNLD1981]

I have exactly the same issue

 

[jbarley]

My clean install of Yosemite GM release, runs youtube videos with sound perfectly.