For Tekknen and all other aficionated members
Tekknen have you been able to solve the issue?, i recomend you to install the AAFHDAudioPack-6.0.8960.1 from this link:
https://luca.samicrusader.me/drivers/realtek-alanfinotty/AAFRealtekMod/ all stuff from this old 2020 thread are now avaiable in the next link:
https://luca.samicrusader.me/drivers/realtek+sb-h4czilla/
I hope help someone, this settings was push me in a obsession breaking my head for a long time other thing to considere Is install DDU driver uninstaller and enable the last option. I take a long time to figure out of all this, but i think in my experience if someone have a spdif out in realtek onboard soundcard and want to send toslink signal to a reciever only have to install the AAFHDAudioPack-6.0.8960.1 The h4czilla settings propose Is for a analog equipment, not for a digital receiver like Sony Str-k685 (2007) for example.
And all stuff from the realtekdriver_2019_03.exe combined with 05rtlk3xdolby.ini with app driver, applyes only for analogs equipment i means for a 5.1 analog ends, otherwise allways you have 2.0 spdif outs results with this thread settings.
Cheers and i be waiting for any answer or advice. The all most quotes in this post are bad explained, and are directioned for a "experts users" forgetting the end home users wants something better with they have