Motion and Audio LAG in Battlefield 3 OFFLINE

Make sure that you are running the newest drivers for your GPU.

Also download CCleaner and clean your PC and registry. http://www.piriform.com/ccleaner

Perform a clean boot:
-Type in search system configuration or msconfig
-Select the Start-up Tab!
-Press Disable all and press Apply.
-Then select the Services Tab!
-Mark on the lower left the box, Hide all windows services.
-Then press disable all!!
!!!!!!! If you using a USB wireless receiver or a third party connection program for internet connection, please look carefully if you see this between services or at the start-up..Don't disable it.. because you wont be able to connect to internet again!!!!!!!!!!!!!!!!!!!!!
-Then press Apply and OK.
-A window will come up to ask you to restart. Hit the box "Don't show this message again"
-Then press restart!!
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If there is any problem on your start up or something is not working like it suppose to, you can always go back and enable what you need!!

-Repair install Battlefield 3 through Origin.

-Make sure to uninstall Xfire if you have it.

-Disable cloud storage in Origin.

-Allow bf3.exe Origin.exe on your Firewall and your anti-virus programs.

-Run the game on Low settings and in a lower resolution.

-Close Battlelog when you start the game.

These steps will help you get rid of lag in the game. 

Regards
theDokt0r

nah,the audio still lag

There's a tutorial on how to fix it here: http://techzwn.com/2013/06/how-to-fix-the-audio-lag-stutter-and-echo-in-battlefield-3/

Apparently it's a problem with Nvidia drivers.