A:Answer Not sure, but suspect the BT processing at transmission and reception is causing the delay. Probably no way to eliminate the delay without a hardwire connection. I connect my patio speakers through another receiver (so I can control the volumes separately) via hardwire (Directv receiver source for both through the AV receiver) and haven't noticed any significant delays, but I was able to run wires through my bark to some rock shaped speakers. Otherwise I pair a BT speaker with iPhone or iPad and listen to music on Pandora, Amazon, Apple Match, etc.