VRay Items - Weird Lighting


I have a little experience with VRay, but I can’t seem to figure out why my lighting is weird in this scene. Everything seems almost perfect except the VRay based materials, namely the grass and palm trees, which are much brighter on the right side of the model than the left.

I’ve moved the Dome Light with the sky around and I have reduced the reflection on the grass to nothing. I also have intentionally placed the sun causing the shadows on the opposite side of the model. I have tried rendering from the opposite side of the street, but still, the parts uphill and palm trees closer to that side are much brighter.

Please help!! Thank you in advance.