When you disable/enable DXVA option in DVD screen of Configuration.exe nothing happen at playback time because the name of the filter doesn't match.

h4. Steps to Reproduce
- Disable DXVA in Configuration->DVD
- Start MP and play a DVD
- Look in Mediaportal.log for a log lines like:

[Info.][MPMain]: DVDPlayer9:Turn off DXVA value = True
[Info.][MPMain]: DVDPlayer9:Video Decoder = CyberLink Video/SP Decoder (PDVD8)
[Info.][MPMain]: DVDPlayer9:Turning CyberLink DXVA off

You won't find the second and the third


h4. Additional Information
Code looks for wrong decoder name: (PDVD8) or whatever is missing !