Bad Shadow Resolution and Distance

Hey UG4 Community,

I have since hours a Problem with the Shadow Resolution and the Vision Distance of them.
Since i set the DirectionalLight to Moveable, the Shadows started to have a Dramatic resolution, and Distance.
I Set the DirectionalLight to Moveable because the Day/Night Cycle.
And when the Shadows starting to Moving, then they flickering.
Here a Picture of the currently Shadow Resolution:

I tried to increase the “Shadow Filter Sharpen”, but then the Shadow from my Charackter looks like a Point, and the antialiasing is very bad.
Is it possible, with Moveable DirectionalLight, to achieve this shadow quality on the Unreal Engine, with a good Vision Distance?

I appreciate all Helpful Answers.
And btw. Sry for my English