Hi arek2. I have exactly the same problem, also with Sennheiser Momentum. I brought it to Asus and Sennheiser's attention a few months ago. They always blame the other. Both devices are probably not fully developed or don't work well together. Unfortunately, I don't have another mobile to compare that supports apxt lossless. But like you, everything works without a problem with aptx adaptive. Unfortunately, I don't know what to do and have already considered sending the phone in for repair, but that probably won't help. Do you have a solution now?
