Issues with foliage.

Greetings! I’m currently trying to import my trees and foliage in a scene and i have an issue and a question. Here it goes:

  1. Even though i’m using a 2k texture for my branches, they look very pixelated. I even tried a 4k texture but nothing changed. The result is that, as you can see in second screenshot, the trees from some distance look very “fuzzy” if that makes sense.
  2. I’m using the single grass wind node in my shader and i want the base of my foliage to stand still. Is there a way to use the alpha of me vertices instead of their color to achieve that? Did a search, but i only found the vertex paint way.

Thanks in advance for the help.