Win10 + Directsound not working

Hello,

I have Kodi 16.1 running on Windows 10 and would like to use Kodi in Audio Shared Mode.

Right now only WASAPI works but the problem is the exclusice mode. I have to close Kodi if i want to watch e.g. a Youtube Video as Kodi grabs exclusive mode of the Soundcard and the Webbrowser cant use it anymore.

I know that support for shared mode in WASAPI got removed but DIRECTSOUND should still work right?
When i activate DIRECTSOUND i only hear the sound effects in the main menu but when i start a video, i cant hear anything.

I found these lines in the debug.log

Code:
13:55:19 T:12908   DEBUG: CDVDPlayerVideo::CalcDropRequirement - hurry: 1
13:55:19 T:2360   DEBUG: CAESinkDirectSound::Initialize: Using Window handle: 000B10AA
13:55:19 T:2360   ERROR: CAESinkDirectSound::Initialize: cannot create secondary buffer (DSERR_UNSUPPORTED)
13:55:19 T:2360   DEBUG: CActiveAESink::OpenSink - trying to open device DIRECTSOUND:{9F14BAA6-66EB-4738-A7D8-6DBA285BC7DF}
13:55:19 T:2360   DEBUG: CAESinkDirectSound::Initialize: Using Window handle: 000B10AA
13:55:19 T:2360   ERROR: CAESinkDirectSound::Initialize: cannot create secondary buffer (DSERR_UNSUPPORTED)
13:55:19 T:2360   DEBUG: CActiveAESink::OpenSink - open NULL sink

Could this be the problem?
Did i misconfigure something?

Regards