Shadow problem

Hi I have already found this question in different forums. But they have been for many years, and there is still no answer.

maybe someone knows how to solve it

Problem: due to movement of the sun (direction light) the shadows tremble.

What didn't work for me:

• Increasing Near Clipping Planes

• There was a theory on the forum: that the cause the world is too big -> I shrunk my world 100 times (now it's 60) -> but still doesn't work

• Another theory: my world is too far from 0:0:0 (stage center) -> didn't help

• Changing settings didn't work either.:(

What works for me but it is a bad option:

• Far Clipping Planes is 8000. if i make it equal to 90 then it works! (but 90 is too low for me)

• Shadow rendering distans is 2000. if i make it equal to 20 then it works! (but 90 is too low for me)