Sharpen is not working with HighRes Screenshot

Hi everyone, i’m using the command “r.Tonemapper.Sharpen x” to get the render i need on my scene and when i try to take a screenshot with the ue4 HighRes screenshot tools the picture is render with no sharpen on it.

If someone have a solution or an explanation for this problem it will be really usefull !

Thanks for your help and have a nice day !

PS: i’ve already try to use Nvidia Ansel to “fix” the problem but it seem’s to be a bigger problem at a the end (after 2 days of research in the aim to make it work, it still don’t work …)