A8F can't have 5.1 sound via optical connection

[ParisShamrock]

Hello. I own a 55" a8f and I can't get 5.1 sound via optical connection to my receiver. Internal apps don't give multichannel sound whatever I do or settings I change. I get 5.1 only when using my Xbox one s as a player so  multichannel pass through works right. What I can do? Anyone have a solution? 

[Allram]

Hi

I get 5.1 with the NetflixApp. but not via HBO or Viaplay 

[rooobb]

You should check with the app developers. The tv is capable of passing through 5.1 multichannel audio over optical