Originally Posted by Crawshayi
Strange though that this "flaw" would only be noticeable on a 2013 flagship phone where as my vintage 2011 Fascinate had no trouble with it. I guess all I can hope for is some optimization with the 4.3 update
I'm sorry you don't like this but i can promise you that your fascinate did not have "no trouble" with it. It is inherent to bluetooth. the quick science behind it
"This audio delay is caused by buffering of audio samples after they have been output by the audio driver (the delay in the audio driver itself is not a problem since there is an API to determine the number of audio samples in the driver's FIFO).
Our understanding is that the audio delay observed with a bluetooth headsets can be a combination of a buffering delay in the device itself (in the bluetooth driver) and possibly another buffering delay in the bluetooth device (headset) itself. Those two delays that add-up can naturally depend on the device (presumably different bluetooth drivers can introduce different delays depending on their buffering), and on the model of bluetooth headset."
Please go ahead and do any simple quick google search(which you should have done before posting) for bluetooth audio/video lag and you will see that any device on the market, mobile or not, suffers from this. If you are using an app that allows it, you can adjust the settings of the video to "lag" behind the audio enough that they will seemingly line up. Good luck