I've recently been experiencing this on and off. My video is ahead of the audio in Windows Media Player (fixed with VLC Player), Youtube, and all other online videos.
1. Re-installed Flash Player and up to date!
2. Windows is up to date. (8.1 64-bit)
3. Graphics Drivers up to date. Catalyst (14.4)
1. Re-installed Flash Player and up to date!
2. Windows is up to date. (8.1 64-bit)
3. Graphics Drivers up to date. Catalyst (14.4)