r.AmbientOcclusionLevels

Defines how many mip levels are using during the ambient occlusion calculation. This is useful when tweaking the algorithm<0: decide based on the quality setting in the postprocess settings/volume and r.AmbientOcclusionMaxQuality (default 0: none (disable AmbientOcclusion 1: on 2: two (costs extra performance, soft addition 3: three (larger radius cost less but can flicker)