Mesh distance fields ruining my lighting/material.

Hello everyone,

I am experiencing the following issue:

Upon enabling and generating mesh distance fields some spots on my landscape material turn very dark:

The issue persists even after I disable mesh distance fields. These artifacts seem to be affected by the distance to the camera as they fade out abruptly as I move away. They do seem to cluster around grass but then not all the hrass is affected. The grass mesh is from the Epic’s Kite demo kit. Any ideas on what is causing this and how do I permanently get rid of it? Thank you.