this my sf 2 setting please try it :
[TerrainMesh]
TextureThreshold=0.80
LowDetailMeshThreshold=0.50
MedDetailMeshThreshold=0.30
TileToHeightGridRatio=4
RenderMeshVertexCount=9096
RenderMeshIndexCount=9984
SolidObjectVertexCount=9999
SolidObjectIndexCount=9999
AlphaObjectVertexCount=9992
AlphaObjectIndexCount=9988
[HeightField]
DetailScale=10.0
DetailFrequency=10.0
MaxHeight=1000
MinHeight=0
[HeightOffset]
LowDetailMesh=-1.5
WaterMesh=0.8
[NormalTextureMaterial]
EffectShaderName=terTerrainEffect.fx
DepthBufferCheck=TRUE
DepthBufferWrite=TRUE
RenderedInOrder=FALSE
AlphaTestEnabled=FALSE
CullMode=CLOCKWISE
LightEnabled=TRUE
SpecularEnabled=FALSE
EmissiveEnabled=FALSE
FogEnabled=TRUE
AmbientColor=1.000000,1.000000,1.000000,1.000000
DiffuseColor=1.000000,1.000000,1.000000,1.000000
ZBufferOffset=0.000000
BlendOp=ONE
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=TRUE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=NO_OP
[WaterTextureMaterial]
EffectShaderName=terWaterEffect.fx
DepthBufferCheck=TRUE
DepthBufferWrite=TRUE
RenderedInOrder=FALSE
AlphaTestEnabled=FALSE
CullMode=CLOCKWISE
LightEnabled=TRUE
SpecularEnabled=TRUE
EmissiveEnabled=FALSE
FogEnabled=TRUE
AmbientColor=1.000000,1.000000,1.000000,1.000000
DiffuseColor=1.000000,1.000000,1.000000,1.000000
SpecularColor=1.000000,1.000000,1.000000,1.000000
SpecularPower=90.000000
Reflectivity=0.00000
ZBufferOffset=0.000000
BlendOp=ONE
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=TRUE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=NO_OP
[BackgroundMaterial]
EffectShaderName=terFarTerrainEffect.fx
DepthBufferCheck=TRUE
DepthBufferWrite=TRUE
RenderedInOrder=FALSE
AlphaTestEnabled=FALSE
CullMode=CLOCKWISE
LightEnabled=TRUE
SpecularEnabled=FALSE
EmissiveEnabled=FALSE
FogEnabled=TRUE
AmbientColor=1.000000,1.000000,1.000000,1.000000
DiffuseColor=1.000000,1.000000,1.000000,1.000000
ZBufferOffset=0.000000
BlendOp=ONE
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=TRUE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=NO_OP
[SolidObjectTextureMaterial]
EffectShaderName=terSolidObject.fx
DepthBufferCheck=TRUE
DepthBufferWrite=TRUE
RenderedInOrder=FALSE
AlphaTestEnabled=FALSE
CullMode=CLOCKWISE
LightEnabled=TRUE
SpecularEnabled=FALSE
EmissiveEnabled=FALSE
FogEnabled=TRUE
AmbientColor=1.000000,1.000000,1.000000,1.000000
DiffuseColor=1.000000,1.000000,1.000000,1.000000
ZBufferOffset=0.000000
BlendOp=ONE
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=TRUE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=NO_OP
[AlphaObjectTextureMaterial]
EffectShaderName=terAlphaObject.fx
DepthBufferCheck=TRUE
DepthBufferWrite=FALSE
RenderedInOrder=TRUE
AlphaTestEnabled=TRUE
CullMode=NO_CULL
LightEnabled=TRUE
SpecularEnabled=FALSE
EmissiveEnabled=FALSE
FogEnabled=TRUE
AmbientColor=1.000000,1.000000,1.000000,1.000000
DiffuseColor=1.000000,1.000000,1.000000,1.000000
ZBufferOffset=2.000000
BlendOp=BLEND_SRC_ALPHA
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=TRUE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=TEXTURE
[NoiseTexture]
Size=121539
MinColor=1007
MaxColor=1055
Frequency=999.7
ResolutionFactor=900.0
StartFadeDistance=9900.0
EndFadeDistance=99990.0