I have a Sound Blaster Z installed in my desktop PC. I have it connected to a 5.1 Dolby Digital/DTS receiver via a toslink cable. It worked brilliantly under Windows 8.1. I never had any troubles to speak of whatsoever. I finally decided it was time for me to move on from Windows 8, so I downloaded the Windows 10 "download tool" and ran through the installation.
After upgrading my OS from Windows 8 to Windows 10 (NOT a clean installation of Windows 10, mind you - I initially upgraded from a pre-existing OS), things continued to work as normal. I was still able to freely switch between and select from either the Dolby Digital Live or the DTS Connect encoders from within Creative's Sound Blaster Control Panel Software. As I switched between Dolby Digital Live and DTS Connect, my external receiver kept right up, automatically adjusting its own "listening modes" on the fly to match whatever encoder I selected software side on my PC. In other words, let's say I chose DTS Connect from within Creative's Sound Blaster Control Panel Software, my receiver would adjust itself, like magic, to DTS. Very convenient, everything worked beautifully. Full 5.1 surround sound with games and movies. Wonderful.
Now for the bad news. A couple of days after running the installer, I figured it would be sort of nice to start fresh with Windows 10, so I formatted my primary hard drive and then performed a clean installation of the OS, but this time with the official, newly released Creative drivers.
Well, ever since "upgrading" to Creative's official drivers, I'm no longer getting any sound whatsoever from the Dolby Digital Live or DTS Connect formats, and my receiver no longer automatically switches itself when selecting between the encoders in Creative's Sound Blaster Control Panel Software. It seems like the sound card and the receiver have essentially stopped communicating with one another. It's all super frustrating, and I'm not really sure what else I can do at this point to fix this problem. As baffling as this might sound, I think the official Creative drivers released on August 3rd, 2015 (File Name: SBZ_CD_L13_1_01_03.exe) have destroyed DTS Connect and Dolby Digital Live under Windows 10. I don't really know how else to put it.
How could something that worked absolutely perfect in Windows 8 be completely broken under Windows 10? Didn't Creative and Microsoft have months and months worth of time to collaboratively work together to make sure something like this wouldn't happen? It's not like I'm trying to re-invent the wheel here - this is simple functionality that no longer works as it once did.
At this point, any help would be greatly appreciated. Thanks.