How to remove this ShadowBug?

hi I have everywhere in the game this pixelated shadows :
How can I get rid of them I tryed all the grafic option but no matter if I play on low or ultra I still have this horrible shadow bug everywhere.

I’m 100% sure I don’t had this when the game launched.

My system:

i7-7700k stock speed
GTX1070ti stock speed
3000MHz 16GB DDR4 ram NON XMP profile