C'est bon, j'ai trouvé, c'est tout simple en fait:
Installation:
Unzip and place opengl32.dll into the bin directory of the installed demo. Default example would be c:\program files\nvidia corporation\nvidia demos\dawn\bin
How to change resolutions:
Select properties for the args.txt or args_ultra.txt in the bin directory and deselect Read-only attribute
Change to desired resolution which has the commented line "// Window width/height", default resolution is 1024x768
Go back to properties and select Read-only attribute
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