En:

Why I can't see high-quality textures and models in game? 
Maybe, because: 

1) You play on a laptop, most likely at the old and feeble. 
2) You play on the computer, but it has an old video card. 
3) Your graphics card is ATI, pretty new model. 

In all three cases, we can only advise to update the drivers for video cards.

4) You have disabled high-resolution textures and models in the video settings. Go back there and turn them back.

Rus:

           ?
 :

1)   ,      .
2)   ,      .
3)  ATI,  .

           .          .

4)        .      .