Indirect lighting postprocess setting no longer works?

Development Rendering
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1

Hi
In unreal 5, I noticed the indirect lighting intensity post-process setting is no longer working.
I cranked these postprocess settings up to values that should have an obvious visual impact, and yet they caused no change atall in the lighting.
image

Is this a bug, or is there something I need to do to make it work?

2

It only works with lightmapped GI. Lumen ignores the setting.

Lumen will respect the indirect intensity setting in individual lights though.

3

ah ok.
In unreal 4.27, it affected screenspace GI.