When I enabled DSR for my GTX 760 it just about eliminated all of that. On or two trees at the periphery of the area trees render as full trees. Disabling post processing in the graphics will do it. Or try just disabling AA under post processing. Sometimes it's related to your FoV choice and\or your texture choice. 1024, 2048, 4096.
I found with my previous graphics card HD6770 1G, reducing the texture mode to 1024 almost eliminated it. That was back in the alphas and I've seen increased improvements to the graphics by Hitech that have about 100% eliminated it with my GTX 760 in 4096 mode at the defaults.
I have no clue what graphics card you are using.