I have the Asus Strix RAID DLX , and I've found something that might a bug but it's not because the games doesn't actually support it so it won't work anyhow.
With a game support 5.1 , any game you can have in mind, say Heroes of the Storm, Neir Autoama and any other. When using Headphones with Virtual Surround Enabled set to 96 Khz the game won't detect the surround. it will only be Stereo . if you set to 48 Khz or 44 Khz the game will detect the Virtual Surround fine.
24 Bit 48 Khz the Virtual Surround still works so there isn't an issue with the BITs.
For real 5.1 Speakers it seem that it doesn't matter, using my 5.1 Logitech Analog 3.5mm it detects no matter 96 Khz or other as long it set to 5.1.
The big question is when installing the Asus Strix RAID DLX drivers it auto detect 16 bit 44 Khz, using 48 Khz is not a problem. but what will happen when I use 24 Bit ? Is it ok to use 24 bit ? for virtual surround at least or anything else ? I noticed I have many weird driver crashing with nhAsusStrixsvc32.exe with error :
Faulting application name: nhAsusStrixsvc32.exe, version: 0.0.0.0, time stamp: 0x5858d80b
Faulting module name: nhAsusStrixsvc32.exe, version: 0.0.0.0, time stamp: 0x5858d80b
Exception code: 0xc0000409
Fault offset: 0x0004a5c0
Faulting process id: 0x2734
Faulting application start time: 0x01d2dba7b586dd72
Faulting application path: C:\Program Files\ASUSTeKcomputer.Inc\nhAsusStrix\UserInterface\nhAsusStrixsvc32.exe
Faulting module path: C:\Program Files\ASUSTeKcomputer.Inc\nhAsusStrix\UserInterface\nhAsusStrixsvc32.exe
Report Id: 85af67ba-00b0-453b-896a-426deb4743e0
Faulting package full name:
Faulting package-relative application ID:
But it was fixed after uninstalling all ghost usb devices, reinstalling the Asmedia Microsoft driver , and the Asus Driver, then keeping it set to 16 bit and 48 Khz. didn't have a crash since.
So my guess is the 96 Khz is causing the virtual surround not to work and crash the driver. the question is does the 24 bit also causing issues ? cause it takes some time to happen , because the virtual surround still works. so I won't know till it happen and I haven't checked yet.
Because another idea is with Dolby Atmos for windows 10, when you enable it, it auto lower the quality to 16 bit and 48 Khz, because it might work the same as virtual surround, so I just wonder about the 16 bit vs 24 bit.