How to use FHighResScreenshotConfig()

Development Programming & Scripting C++
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Hi all,

I try to save screenshots from a 1st person character.
For that, I use this code…

FScreenshotRequest::RequestScreenshot("c:/Temp/photo.png", false, true);

GetWorld()->GetGameViewport()->Viewport->TakeHighResScreenShot();

…which produces a low definition file.
I see a FHighResScreenshotConfig class exists with a parameter called ‘ResolutionMultiplier’.
Anybody knows how to use it ?

Regards,
luguen