Ambient Occlusion not working

Hey there,

I have this scene, and as you can see the wod is pretty rough on the ground
Theres AO missing, but I tried enabling it in the world settings and also crank it up on the PP volume
The AO buffer visualization just renders everything white, I can’t see any AO there too, what am I doing wrong? (I am using dynamic non-static lighting).

Any help is greatly appreciated!