Changing Map Resolution For Low End Systems

[BearOnATricycle]

So I am completely new to modding, and since I am stuck with a low end computer, I was wondering if anyone had any advice/tips on how I could make a mod which would replace the current textures with something that a low end system could run. I remember there was a similar mod made for CK 2, which was what made me think of this as an option in the first place.

 

[rpstrategist]

Did you disabled trees and water from the settings first? That helped me a lot.