Thanks vituali however i think it is abit different of a problem
I think instead this is exactly the problem that was described: textures relatively close to your airplane which are blurred. That's the correct definition of the blurries. Not to be confused with mipmapping, which is good.
Have you tried putting the sim in Slew mode, and wait a little bit ? If textures gets sharper when the sim is still, it's probably simply a matter of too high settings, and the PC can't cope up, because when moving (at airliner's speeds) the constant switching between hi-mid-low-lower textures is difficult to handle, if the load is too much.
Sometimes, lowering setting a little bit, might even *increase* the image quality.