I have Raspberry pi 3B, DAC2 HD and DSP add on board.
Now I use DAC2 HD with iPhone and Macbook pro
IPhone (ios 15.2)
MacBook pro (Monterey 12.1)
When I connect Airplay, it work for few second and no sound and in a few second and go back to normal.. this happen repeatly and every time.
for you reference, Bluetooth is working perfectly.
Hifiberry os is latest, I think 20211105 version.
Could you please let me know what is problem?