Why do shadows and some objects appear as a grid?

Question

ASUS

I noticed that the shadows are displayed in the form of a grid. Also, some objects if you approach them in a dense grid are displayed. What is it, what is the cause and how to treat? Thank you . System - laptop asus GL702vs video card gtx1070
PS to see, open the picture in a new tab, you can see that some shadows are normal, and some are gridded.

Answer 1

These are most likely LOD 's, with the help of dithering baked shadows are mixed with real-time ones so as not to switch them by clicking. Real-time shadows are more expensive, so they only work in a small radius from the camera, but you also need to show something in the distance, so pre-calculated static shadows are used there.