increase shadow quality

@hilderstone  Are the shadows the only shapes that seem jagged to you?  I ask because a few people have reported that anti-aliasing stops working for unknown reasons, but you'd see that along solid lines like tables and the tops of walls.  Either way, it would help if you posted a couple of screenshots.

Please also run a dxdiag and attach it to a post.

https://help.ea.com/en/help/pc/how-to-gather-dxdiag-information/