Packaged game stays in focus or fails to reduce CPU usage when backgrounded

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I’m facing an issue where the packaged game does not reduce CPU usage when running in the background (i.e., when it’s not in focus). It continues to consume the same amount of CPU and still receives inputs (from the controller, not the keyboard).

It’s possible that the game never truly goes into the background (always staying in focus), or it might simply not reduce CPU usage. Maybe there’s another issue.

When running the game through the editor, everything works as expected—CPU usage decreases when focus is lost, including when running in a new editor window. I’ve tested this on two computers, one running Windows 10 and the other Windows 11. I’m using Unreal Engine 5.3.2.

Is this the default behavior? Do you have any advice on how I can get the packaged game to reduce CPU usage and properly go out of focus when in the background, as it does in the editor?

TLDR: The packaged game runs at full CPU usage and receives input when ALT-TAB’d. Is this normal? Can I change it?

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Can anyone confirm if this is normal behavior at least, even if you don’t have a solution? Do your packaged Unreal Engine 5 games run at full FPS and CPU usage while in the background? I’m unsure if this is a bug in my project or the expected behavior.