Per Application GPU Setting missing GPU

Discussion in 'Windows 10' started by Krutonium, Dec 22, 2018.

  1. Krutonium

    Krutonium MDL Senior Member

    Aug 27, 2013
    408
    284
    10
    Okay, so specifically, I have an R9 390 and a GTX 750 Ti installed in my PC. I am unable to select the 750 Ti as the GPU for an application for a game to run on, as Windows for some reason things that the 275W R9 390 is more power efficient than the 35W 750 Ti.

    Annoying.PNG

    My question is, does anyone know where this dialog saves the information that I input? If it's simple, I might make my own program to set it and make it Open Source.

    Thanks for the help!
     
  2. Krutonium

    Krutonium MDL Senior Member

    Aug 27, 2013
    408
    284
    10
    Alright so I did some digging - the settings are saved in

    HKEY_CURRENT_USER\Software\Microsoft\DirectX\UserGpuPreferences

    where the key is named the path to the executable, the type is REG_SZ and the Data value is

    `GpuPreference=2;`

    Where 0 is System Default, 1 is Power Saving, and 2 is High Performance.

    Which leaves me with the issue of still not being able to select my 750 Ti.