Improvements
high res (1920x1080) x2scale (-viewcapturetofile)
this image is by far some intended quality i was talking about. Finally!!! 
So i have been report this question about the shadows and thanks a lot to PASCAL for solving all my problems.
At least for this file… (further i will test it “bubble clipping” on some 800MB complex File.
I work a lot with capturefile to send images to photoshop and work them to presentations. They are more fast then tunning all on a Software Render… But till this day i was not able to out perform a good shadows quality. THANK GOD…or better… THANKS PASCAL