[brazen1]

I've installed the new Windows update v.1809 and also updated nVidia drivers to the latest 416.16 editing in alternative audio drivers into the installation.  So far I have tested Audio switching, HDR switching, 3D switching, SDR, iso's and mkv's with success using MPC player method.  I have noticed DVDFab Player v.3 no longer switches into HDR mode so I'll investigate if it's the Windows update or the driver when I get more time.

Trying to salvage DVDFab Player v.3.  Substituting Windows HDR for private API's HDR isn't a good idea.  Not even in a pinch.  Windows HDR is deeply overly saturated and I don't think recalibrating is the answer.  This isn't going to bode well for DVDFab Player v.3 any longer.  In my testing, it no longer switches into HDR mode using Windows 1809 and since v.3 is no longer updated, it's a lost cause.  Last I checked, DVDFab Player v.5 isn't private API compatible and relied on Windows HDR.  That isn't going to change.  This isn't looking good.  MPC players with LAV and madVR are still switching but as I've stated before, load times are getting longer and since updating it's even longer... at least for me.  Tried old faithful older nVidia drivers and no change. 

On a good note, PDVD is still switching 3D and all is well.