No 5.1 to speakers on windows (via HDMI or Optical)

[willhub]

As the title, u can't seem to get 5.1

Via HDMI I only have the option of stereo or Atmos.
Via optical I only have options of stereo?

I have connected the optical cable to the "CD" optical port in my Onkyo onkyo tx-nr686

If I configure Dolby Atmos on HDMI I can configure so it's only got front, rear and center speaker, but will it just sound like 5.1?

Any ideas?

 

[willhub]

Make sure your software and os is set to bitstream. Load up MPC HC and select options for output

Will setting it in that change settings for games as well?

Can't tell how to set to bitstream in Windows

 

[willhub]

Cheers I'll have a look.

When I select Dolby Atmos, and remove the side speakers so it looks like a 5.1 config, will that be setting it to 5.1 in windows? The receiver is showing DD+ 5.1 and as far as I can tell it seems like surround? Not sure if I'll be missing some sounds though?

 

[willhub]

I'm running HDMI 2.1 from PC to TV, then HDMI 2.0 from TV (LG BX) to reciever (Onkyo onkyo tx-nr686