Any luck here?
It has never worked for me either, shows up fine in windows but in dx11,12 games it doesn't preserve the ratio.
"Centered" works fine, just not preserve the aspect ratio.
You could try doing this. First set your desired resolution in windows, then start a game you are having issues with. Change the resolution settings in the game to match what you had set in windows, go CTRL-ALT-DEL return to desktop , go to GPU scaling in Adrenalin , and set on "preserve aspect ratio". Return to the game. Did it hold it?