The audio frame length is the unit for audio data sent and received. The default value is 144 ms. The audio frame length can be any value between 64 and 192 ms, set in increments of 8 ms.
Reducing the audio frame length reduces the packet size, which helps curb audio delays. But more packets than need to be sent per unit time increases the volume of communication. Conversely, increasing the audio frame length helps curb the volume of communications, but at the expense of more audio delays. Adjust the value according to the volume of communications in your game.