Tree render adjustment?

Hello guys, I would like to make a quick question. I have added some trees to my environment, but unfortunately, the render looks like the screenshot, depending on the distance that the camera is from them. When the camera is getting closer to the trees then the rendering is normal. What should I change from the settings?
Thank you very much.

Thanks for your time. But unfortunately, building the lights did not fix this issue. I think it has to do with render distance and/or collision but I still can not figure it out.

its a lod issue. so you should just set the lod to only use level 0. or modify the lod settings for your mesh.

Thank you very much , I changed LOD type to foliage and max LOD to 1 and that fixed it.