Shadow lit areas looking very blotchy Unity 5

[GameGuy]

Hey Unityers,

Shadow lit Areas are looking absolutly worse, see Screenshot.

I guess there is something wrong in the Setup so I attached screenshots of all important objects and configurations. The Cubes are Unity buildin Cubes.

Lightning tab:

Quality settings:

Some additional info Unity:
No Graphics Emulation, Shader Hardware Tier 3, DX11, Gamma Color space, Deferred rendering path.

System information:
Win7 Pro 64 Sp1, Intel I7, Nvidia Gtx 760

[Stardog]

Try making the Camera component HDR enabled. It might not fix it in the scene view.

[GameGuy]

Enabling HDR has no effect, even in an executable