shimmering trees

[Doc_uk]

I have no video, of it.
but has anybody else got shimmering trees and shadows when flying over land
just Doesnt look right
Ok got vid of it Look to the left, and then to the right, you can notice it better when you see the little house with the brown roof, on the right
http://youtu.be/qc3Zj5RUVPk?hd=1

here is my settings
[window]
DepthBits =24
StencilBits=8
DrawIfNotFocused=0
SaveAspect=0
Render=D3D11_0
width=1920
height=1080
posLeft=0
posTop=0
ColourBits=32
FullScreen=1
ChangeScreenRes=1
Frequency=60

[rts]
tickLen=30
;ProcessAffinityMask=15
maxTimerTicksInRealTick=20
; 0 - not use, 1 - show cursor and not capture, 2 - not show cursor, and capture
mouseUse=2
; 0 - not use, 1 - use if hardware exist
joyUse=1
; 0 - not use, 1 - use if hardware exist
trackIRUse=1
DisableIME=0
culture=en-GB

[rts_mouse]
SensitivityX=1.0
SensitivityY=1.0
SensitivityZ=1.0
Invert=0
SwapButtons = 0

[rts_joystick]
FF=1

[core]
RandSeed = 0
TexQual=2
TexFlags.PolygonStipple=0
Shadows=1
SpecularLight=2
DiffuseLight=2
DynamicalLights=1
MeshDetail=2
LandShading=0
LandDetails=2
Sky=3
Forest=2
VisibilityDistance=3
LandGeom=2
DrawCollisions=1
Water=-1
Effects=2
EffFlags.Light=1
EffFlags.SpriteRender=0
Grass=3
CordEffect=1
UseFog=0
UseLandCube=1
UseLandConnectedObject=1
LinearObjectManager=1
Roads=1
Sun=1
Clouds=1
EffFlags.LightSpritesProj=1
ShadowMapSize=5
TexFlags.AsyncLoad=1
TexFlags.ShowTexture=0
SimpleMesh.SWTransform=0
SimpleMesh.QuadTreeClip=1
SimpleMesh.InstancingHW=1
EffFlags.LightContextSprites=1
CloudsFlags.Detailed=1
TexFlags.CreateHDR=1
Decals=2
EffFlags.SWLight=0
TexFlags.CockpitOnePass=0
MegaTexture=0
TexFlags.Reflection=0
RenderTargetQual=3
MSAA=5
MeshStatics=1
MeshStaticsDetail=4
SimpleMesh.QTNoCompose=0
MeshFirstLod=0
MeshShowLod=0
SpawnHumans=0
TexFlags.FastTransparency=1
TexFlags.SSAO=1
TexFlags.VSync=1