I searched for the mentioned fix, but no luck so far.
Try "mipmaplevel=6" added under [AlphaObjectTextureMaterial], but I really don't remember if it was it, ONLY for DX9 systems:
[AlphaObjectTextureMaterial]
EffectShaderName=terAlphaObject.fx
DepthBufferCheck=TRUE
DepthBufferWrite=FALSE
RenderedInOrder=TRUE
AlphaTestEnabled=TRUE
CullMode=NO_CULL <-try setting to 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=2.000000
BlendOp=BLEND_SRC_ALPHA
NumTextureStages=1
TextureStage[01].TextureName=
TextureStage[01].MipMap=TRUE
TextureStage[01].FilterEnabled=FALSE
TextureStage[01].StageColorOp=TEXTURE_MODULATE_DIFFUSE
TextureStage[01].StageAlphaOp=TEXTURE_BLEND_TEXTURE_ALPHA
Mipmaplevel=6