Sound comes after 6-7 seconds after the beginning of a video

Hi everybody,

I have a problem when I updated Adobe Flash Player. When I start a video (like youtube), there is no sound at the beginning. I must wait 6-7 sec and the sound comes. So I must return to the beginning of the video to listen to in full.... it's tiresome.

Do you know how can I resolve the problem?

Thank you in advance.

Browser : Google Chrome Version 29.0.1547.57 m

O.S. : Windows 7 64 bits

Adobe flash player : version 11,8,800,115