UE4 uses less CPU when backgrounded, which is the case when you’re focusing other window.
If you don’t want to configure this, you would have to make the GUI window be part of the unreal process, you could maybe manage to do that creating a runtime plugin to run that process and use slate to build everything inside
Now lets hope that t will still work with a packaged project, since it seems to be a feature of the editor, I have no idea on how it will propagate to an executable app… lets see
Well, seeing that those are Editor configs, they shouldn’t work on a packaged game… in that case i think the best way to go is to either test it and see how the FPS responds, or do a more “internal” solution as previously stated