Junjunhernan :
what's your settings and your resolution?
Aspect Ratio- 16:9 Widescreen
Resolution- 1920x1080
Antialiasing- off (best performance)
Antisoropic Filtering- off (best performance)
Detail- Ultra
Texture Quality- High
Radial Blur Quality- High
Shadow Detail- Ultra
Decal Quantity- Ultra
FXAA is unchecked
Water: Reflect land, Reflect objects, Reflect trees, and Reflect sky are all checked
View distance: all set to max
Distant object detail- Ultra
Object detail fade- unchecked
These are the settings i use in skyrim. i hope this helps. are you still having trouble?