optimize for latency

src/auracast/server/multicast_frontend.py

@@ -309,7 +309,7 @@ else:
                         )
                     ),
                     input_format=(f"int16le,{q['rate']},1" if audio_mode == "USB/Network" else "auto"),
-                    iso_que_len=1, # TODO: this should be way less to decrease delay
+                    iso_que_len=1,
                     sampling_frequency=q['rate'],
                     octets_per_frame=q['octets'],
                 ),