While testing wiring up the AVRCP controls in mediaplayer I noticed during testing of A2DP playback from my iPhone (X running iOS 15.3.1) that quality is very poor, with a large amount of choppiness.  There are no error messages at all from PipeWire while this is happening.  With an Android phone running Android 10, quality is passable (there are some occasional dropouts, but quality is otherwise okay).  This is on the reference hardware, so it should be easily reproducible if an iPhone is available, all that is required is to pair & connect the phone in the Settings app, then try playing media from the phone (e.g. hit play in Music on the iPhone).