Adding console commands to .ini files?

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I just wanted to post here for posterity. If you are wanting to add console commands to you DefaultEngine.ini file, you should be doing this in a category called [SystemSettings] at the bottom of your ini file.

Although the [/Script/Engine.RendererSettings] is filled with r. commands, these are commands that are accessible from within the ProjectSettings of the editor. If you add console commands that aren’t accessible through the ProjectSettings to this section, they won’t do anything.

Here’s an example of my SystemSettings:

[SystemSettings]
GameAudio.Volume=1.0
GameAudio.MusicVolume=0.5
GameAudio.SFXVolume=1.0
r.HeterogeneousVolumes.MaxStepCount=512
r.HeterogeneousVolumes.DownsampleFactor=0