Where to store render variables. Tried all .ini

I’m trying to store those settings: r.TemporalAACurrentFrameWeight 0.25
r.TemporalAASamples 4
r.Tonemapper.Sharpen 1
I tried to store those settings in almost every .ini files (both in the project folder and engine folder) but none of those are working, I have to enter them manualy each time I open my project to make them effective. What am I doing wrong?

Nobody knows !?

You can create custom “Settings” UObjects for anything. These objects register their properties in ini files that you see.

Search engine source for “config = Game” for examples.

Thanks for your help and sorry but can you elaborate more please? I don’t have any knowledge in engine coding.
I thought those settings could be stored in a config file.

Something like this

It’s even more cryptic than your first answer.
All I want to know is in which of all this .ini files I have to store those command lines, to make them active “per project” and in the editor.