second mod:
This mod has a extreme grass density, but you can adjust the density with a simple INI setting.
Open your skyrim.ini and change under [Grass] this line:
[Grass]
iMinGrassSize=20 to a higher value for less density or to a lower value for even more density.
3e mod:
To fix the Distance it renders you need to go into your SkyrimPrefs.ini (MAKE SURE YOU BACK UP) and change fGrassMaxStartFadeDistance= to 14000.0000, this will render the grass as far is it can in a Stable fashion.
T'as modifié les valeurs comme ça a été spécifié?