Bluetooth audio lag

Just updated (17th.Oct.2014) to OS X Yosemite. Im having trouble with bluetooth connection. There is an audio lag on my bluetooth headphone which progressively gets worse. Im using Sony DR-BTN 200. Is there a temporary solution until they fix it?


P.S. I found others with similar issues as well. Ive tried re-pairing the connection to no avail. Any help would be appreciated.

MacBook Pro, OS X Yosemite (10.10)

Posted on Oct 17, 2014 9:27 AM

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Posted on Dec 20, 2014 6:27 AM

The storage of the Bluetooth audio values have been changed in Mavericks / Yosemite the defaults are now with a process called “Bluetoothaudiod”, you can change the defaults by using the following example:

Sudo defaults write bluetoothaudiod "Apple Bitpool Min" 50

Please see below all the parameters I have changed, to read the defaults please enter the following command in terminal:

sudo defaults read bluetoothaudiod

enter your password:

MacBook-Pro:~ Ciaran$ sudo defaults read bluetoothaudiod

{

"AAC Bitrate" = 320;

"AAC CBR" = 1;

"Apple Bitpool Max" = 64;

"Apple Bitpool Min" = 50;

"Apple Initial Bitpool" = 50;

"Disable AAC codec" = 0;

"Disable AptX codec" = 0;

"Disable HFP" = 0;

"Enable AptX codec" = 1;

These setting work well with my Bose Soundink OE headphones, please be careful entering the values as they are case sensitive, I really hope this helps some of you out there.

Cheers.

436 replies

Oct 18, 2014 1:13 AM in response to mommu

No I just listen to iTunes without any additional apps. Local movies have same problem. All audio stream from Mac is lagged and delayed. I noticed it starts to lag when you do something on your Mac when audio is playing. Pressing play/pause several times or reconnection helps but not for long. That's problem of Yosemite. And I think it's because we have bluetooth 2.0. Seems like developers were focused on great work for continuity and hand-off on Macs with bluetooth 4 and forgot about owners of old Macs. I hope they will fix it in a new update but I'm sure It will take time for release.

Oct 20, 2014 9:52 AM in response to sashanoir

Try turning Dashboard to OFF in the Mission Control Settings,


I read on some page that that could help video problems. I now have running: safari with youtube video playing, mail iTunes and a movie in VLC and no delay in video or audio so far. * never mind the second I typed that delay started but it did take 10 mins to start delay versus every 5 mins. perhaps Dashboard is related somehow?


I think reinstallation will be my next course of action.

Oct 22, 2014 11:05 AM in response to mommu

I just had a chat with somebody in the support chat. S/he said s/he'll make a note and I'm getting a call back, too.I think this might get more attention if as many people as possible bug their team.

This is how you do it for free even if you don't have a protection plan:


1. Go to https://getsupport.apple.com/

2. Select your device/problem

3. Select you'd like to chat

4. When prompted, enter your serial number

5. You might either still have a protection, then just go. If not you'll be prompted to pay for the chat.

6. Don't pay, just select "Request and exception."

7. As the reason for the exception choose "I recently purchased Mac OS X"

8. Tada. State your case.

Oct 26, 2014 1:16 AM in response to mommu

Hi,


I have the same problem, MacPro mid 2010 + logitech bluetooth audio receiver connected to big speakers, there is a lag effectively, i noted it constantly in Youtube (i thought it was a flash problem).


I found a temporary solution, click on bluetooth configuration disconnect the speakers and connect them again, this will solve the lag for an small while, well... despite is not a real solution it can solve e.g. the annoyance of watching a full movie .


Regards,

Oct 26, 2014 10:03 AM in response to mommu

In my experience with UE Boom and Yosemite it looks like:

  • it looses sync every couple of minutes
  • often the playback is choppy
  • sometimes when I switch the music app to the background and turn safari to the foreground (most often) the playback becomes unbearable choppy

I've tried setting Bitpool to a higher value: defaults write com.apple.BluetoothAudioAgent "Apple Bitpool Min (editable)" 40 but it looks like the way it works has been changed as defaults read com.apple.BluetoothAudioAgent gives me only the value I just wrote compare.

I've also tried setting process bluetoothaudiod niceness a lower value, but it too didn't help.

Nov 18, 2014 12:51 AM in response to mommu

everything seemed to be working until i played an online game while listening to iTunes.


the game's audio quickly went out of sync. once i quit it and returned to the desktop bluetooth worked in sync again.


when i throw away trash, listen to iTunes, and play an online game - it goes out of sync.

this was the only instance of noticeable audio lag so far. you can hear the system hiccup as the sound blanks out for a millisecond but thats the amount of time the delay starts with. when you push the system more than it wants, bluetooth goes out of sync. but then goes back into sync when its at the level of work it likes. strange.


with plugged-in headphones there is no issue.\


oh I'm on 10.10.1

Nov 18, 2014 1:14 AM in response to mommu

so I just had a slight problem with a youtube video and you can hear the audio skip for a millisecond and theres when the delay occurs. this is after resetting the PRAM and restarting.


its like when a record skips, its that quick. the solution i found was to just select a different point on the videos timeline and it syncs back up again.

when iTunes audio was delaying slightly it seemed to realign itself as I pressed play/pause.


nothing half as bad as before but still a small bug.

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Bluetooth audio lag

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