AMD 6800XT sending stereo output to LG TV

[Dirk Diggler]

I've got my 6800XT linked to my LG48CX via HDMI cable.
I've got my Denon AVR-S760 connected to the TV ARC socket.

All output from the TV (Freeview, Native TV apps like Netflix, Fire TV Stick, PS5 etc.) is being picked up as surround, except the PC which is prompting the Denon to switch to stereo output as soon as I switch it on.

Why is my GPU sending stereo output to the TV and how can I change this?

TIA

 

[Dirk Diggler]

Load up MPC HC and in audio decoder select all formats your AVR supports.

Hi, what's the MPC HC?

Ah, edit to see you're meaning Media Player. I can try that, but that won't fix the issue with stereo output in games will it?

 

[Dirk Diggler]

Wow, I had no idea it was this much grief trying to get proper audio output from PC - everything else seems to cope with ease, even my Amazon stick and native LG apps.

Thanks for the assistance @hornetstinger, but I'll stick to my Audeze cans with the PC