Roughness in your material is set to 0 and your grass is extremely reflective. That artifact that you are seeing is probably result of screen space reflections, try setting the roughness to 0.5 and that should work.
Roughness in your material is set to 0 and your grass is extremely reflective. That artifact that you are seeing is probably result of screen space reflections, try setting the roughness to 0.5 and that should work.