This is general question.
In the multitude of video-games that are not specialized in scoped warfare (like Sniper Elite), I've noticed that when you zoom in with a scope, the textures and normal maps won't "update".

You're standing on coordinate $(0,0,0)$ and the textures will load in full quality to some other $R^3$ coordinate, let's say $(10,10,10)$.    
If you look through a scope from $(0,0,0)$ past the "Max quality" distance, let's say $(10+n,10+n,10+n)$ (where $n$ is the zoom in factor), the zoomed in textures will not updated as if you were standing on the coordinate $(n,n,n)$.    
The best example is the Fallout 4 scope zoom-in.    
If you zoom in anywhere, the distant textures to which you zoom in will look washed out.   
What are the solutions to such problems? Are they engine related? I've just started to dabble in OpenGL and noticed that problem on the multitude of games which share the same game engine.