Guys, please tell me how to get a strict shadow of my model?
I tried to change shadowmap resolution to 512, nothing helps. How to fix it?
You have to change the lightmap resolution of the landscape → in the details panel (dont go over 5-7) 
And please dont create duplicate posts. You already asked this a couple of days ago and i answered you here: Precise mapping instead of dirty - Rendering - Unreal Engine Forums
But it didn’t work actually 
It will. If the ground plane is a static mesh go higher than 512. If it is a landscape then do what suggested and increase the lightmap resolution to 4 or 6.
ok, thanks