HBOGO doesn't produce surround sound
Hello,
I have been trying to figure out why is that the HBOGO app is not producing any surround sound, just stereo. Other apps in my AppleTV do, for instance, Netflix or Movies.
I have already checked the settings on the AppleTV and it's with the "use the best available". I have already changed it to Dolby Digital 5.1 and it's the same, just stereo sound from HBOGO app. I have tried different materials (Game of Thrones, some other movies) and it's just stereo.
I've googled already and followed the few clues I saw (mostly was the Dolby Digital setting) but nothing changes, apparently. After changing this I restarted the AppleTV.
I have the AppleTV connected to my AV Receiver (Denon S720W) via HDMI.
So, for other users of HBOGO, do you get surround sound there?
Thanks!
Apple TV, tvOS 10.2.2