The TV was set to PCM, and I was receiving 2ch only from the apps( Netflix and cinema now). I switched it to bitstream and I get 5.1 sent to the receiver. To be honest, I believe there's little to no difference in sound. At first, the receiver was getting 2ch from the TV and decoded the signal and sent it out as 7.1. Now the receiver is getting direct 5.1 from the TV and sending out 7.1. Either way, there's decoding taking place in the receiver.
You would notice after a bit more use and some varied content.... processing 2 channels into 7.1 is a lot different than just basically duplicating the surrounds from 5.1 -> 7.1.
well I think it's a big deal anyhow.