Black area on landscape

I have this problem and i can’t tell if its a lighting problem or my landscape material.

So the problem is I have this black area on my grass area. If you look at my low setting and epic setting, it turns the area black and light/shadow doesn’t behave like that? And if its meant to be dark/black, then the foliage leaves that i have applied on my landscape should be dark/black as well. So i’m wondering what the problem could be.

Please help

I’m kinda new to unreal engine 4. Thank you very much.

Hello jteoo,

Would you provide a screenshot of your landscape material. Also, would you provide a copy of your DxDiag (System Spec’s).