Are the shadows supposed to look like this?

[Lex]

Hi guys.
I just installed LA noire to play again, and i noticed that the shadows of the hand of character when looking at notebook looks very pixelated. Is this normal?
I set all options to quality and 3x AA.
DX9 and DX11 this still happens.
This is what looks like, look at shadows below the hand http://i.imgur.com/20g5g0G.jpg
I have a 3570k and a gtx 1070.
Also the game stutters a lot, and known fixes like the commandline options still don't make the game steady at 30fps.
And my 1st cpu core is almost at 100% all the time, like the game is not using multithread at all even with the multi option selected.
DX also causes a bug where game goes to 24hz, then i have to return to 60 manually, so i decided to use dx9 since looks and performs the same and dx9 do not goes to 24hz every start.