24 bit, 48000 Hz (Studio Quality)
Check that the intended sound devices are set in the game or launcher (if an option is provided). Many games rely on the operating system's default sound devices, so having that set to the intended device will avoid many problems.
Encoding APO (Audio Processing Objects) are broken. A fix was released with build 10547, but it still fails to completely address the issue. A workaround has been included since builds 10565 and 10586, but stopped to work for some users in 10586.3 (driver issue?). Build 14316 broke DTS again, fixed in build 14342.