I have 3 Symfonisk Bookshelf speakers all in the same room, on wifi, connected to an access point pretty much in the middle of all 3 and I can choose different music to play on each speaker at the same time without issue. The issue I have is when I try to play the same music to all 3 at the same time it only plays through one. If I choose any combo of 2 to play then it works (speakers A+B, B+C, A+C all work). If I stereo pair 2 together and play to that pair and the 3rd it still only plays through 2.
Anyone have any ideas on what else I can try?