strange disp problem

I have a plane with two textures attached to it, one is a blend and the other is a cloud texture.

The blend is mapped as a stencil so that only the light/dark part of the cloud texture displaces the plane mesh.

i have set the disp to 0.10 but the disp is all messed up?

Increase the (render) subsurf level up to about 3 to 5 and see if that helps.

Try lower Disp values too, and turn the Nor slider of the texture which has displacement on, to 0. If you want bumpmapping too, put this in another texture channel, because displacement- and bumpmapping in the same texture channel mess eachother up.

thanks, lowering the Nor value helped