Why is the sound quality of BLE audio so bad on STM32WBA55G-DK1

[Xiaojie]

HI,

    I download BLE_Audio_TMAP_Peripheral firmware to STM32WBA55G-DK1 board,  and Headphones was select as Audio Configs on the borad. 

   When i start playing music, the audio quality was so bad.  I previously sent the input data of the headset to the audio codec chip for output on my project, and the sound quality was very good. 

So why is the sound quality so poor when playing music? 

Is it a problem with the BLE codec or is the processing speed of the MCU too slow?

[Xiaojie]

I recorded the audio output from the headset using a recorder and uploaded it as an attachment.

The audio sounds laggy, especially when there are rapid changes in the audio, the lag is more noticeable.