Thank you Anvifolk!
I have the following settings:
models: high
buildings details: very low
number of buildings: low
woods: no
terrain textures: high
effects: high
textures quality: original
damage decals: high
terrain shadows: medium
shadows: no
grass: no
roads: no
I play with 1280x768 risolution, AA filter 4x and get around 10-25 fps.
This is the quality of landscape with this grafic options:
