Since multithreading came out, icons have not scaled with resolution, making them almost impossible to see in 4K. After waiting for a fix for ages, I decided to see what I could do myself, and after some research I've edited the labels.lua file and got them back to where they were before they got broken, just put this file attached here at the bottom of this post.
C:\Users\*****\Saved Games\DCS\Config\View
some screens,
Labels.lua