Hey all, long time lurker first time posting.
Just wanted to share my findings in all kinds of trail and error using the SPDIF endpoint with Dolby Digital live or DTSi. I have tried most everyone's custom drivers and learned a lot for my application through them. Credit to
@alanfox2000 @Alan Finote for the work they put in, its obvious to me the effort given and I am very grateful. For my application Dolby Atmos Speaker System for Gaming is the best sounding enhancer for SPDIF using DDL or DTSi, but it was a bit tricky for me to get working correctly without being in "headphone" mode only giving sound to two front left and right with the center without the sub.
For me the solution was to only install the latest driver and patching the DLL's, the two options are to patch the current .dll with corresponding driver pack, or to use the 2015 .dll that has been shared on this site as well as the ROG forums. I choose to patch the current driver .dll and only receive DDL. Although the 2015 .dll gives both options on my 1220A Realtek chip from my Crosshair VI, I have seen problems when trying to separate the front jack into headphone only and using DTSi. I did some research and found some had some issues with that as well as it seems that DTSi likes to have the stream that gets assigned to the front headphone jack when separated available to function properly. I don't know why, I didn't dive that deep into it as I just decided to take the more cautious route and just move forward with DDL. I like to separate my front jack because while using Atmos for Gaming it is the only way it consistently switches to headphone profile.
So to wrap up that wall of text... for me its patch your diver to have SPDIF surround, use APO tool and configure to use Atmos on all endpoints including SPDIF. 3.3 or 3.2 XML work, 3.2 less buggy it seems. Configure default.xml for 6 channels. Start FX configurator and apply {A29EB043-6CE2-4ee2-B38C-F58719E0D88F} to endpoint fx apo, and composite endpoint apo, apply and then restart sound driver or just restart computer. You now should be able to use DDL 5.1 with Atmos enhancing it. Sounds wonderful, I put my receiver on Cinema and use corresponding profiles within Atmos, loving it. I am starting to tweak the settings on my receiver to best fit the setup now and am pretty new to the whole scene if anyone has any advice on that.
Keep up the great work, love the insight shared here.