Folige pakage render Error

Hey there. I have a question. The lawn was placed in a folige and next, window-packing, and then executed. However, if the grass made of Folige is far away, it can be seen well, and if it is close, it is gray and low-polygon-treated. I also removed the activation of nanite, and I tried to make it a new project, but this problem continued. please let me know how to solve the problem.
I want to solve this problem, help me.