Hi,
I have similar problem. When I’m creating default Unreal (5.1) project (this one with race) - I have set Lumen and I can change for e.g colour of ambient occlusion - it works!
In my personal project I can see AO but i can’t change this colour for e.g.
Aaaand what is weir - it wokrs oly with scalability settings set on Low or Medium With High, Epic, Cinematic - nothing hapend
Any ideas?