errrr how does one test if event driven mode is working?
If it is not working either log will show that the WASAPI device wont accept that or in Xonar's case it should corrupt the audio itself (pops, noise etc.)
Weird . edterbak told me play-exclusive mode still not working but in MP sound seems good.
Meanwhile I've tested Unified Xonar driver 1.25 but with no result. for me event driver not work. but it's not a problem because last renderer is perfect even without that mode.
note: edterbak have a D2 not a DX.