Anti-Aliasing transparency Problem

Hi, i have some problems with the anti-aliasing transparency ingame, all the transparent textures look very pixelated, all the other objects are ok.
I have tested all the grafic options and resolutions, and i switched on the Nvidia GPU anti-aliasing and anti-aliasing transparency otions (max.) but ingame the transparent textures look still pixelated.

I Have a Nvidia GTX 970 with the newest Driver and a intel core i5-4590 prozessor.

I would be happy if I got an answer, Tanks!

Anti-Aliasing transparency Problem