My material has tiny spikes in it. A point to note is that i have displacement in it so it may be causing the issue. You can see the image.

my blueprint and problem

Does your basemesh have enough subdivision before applying the tesselation? Found some hint here.
Also, I’m not sure if such high values for the multiplier have any effect. There have been discussions on the forums, that this is limited to 15 or even 8.

you basically mean that i should change my mesh from landscape to something else right ? . Please suggest me something to replace it with.

Oh, it is a landscape terrain. Of course, you should not replace the landscape with a static mesh. Do you use any landscape sculpting at all? The landscape looks really flat.

If the textures of your material are meant as a heightmap for the landscape, you should better go and create the landscape from this. In the terrain “manage” tab there’s an import option for this.

I’m not sure about using tesselation with landscape materials at all. Looking for that, I found this old thread

In case you are using pn-triangles tesselation, try to replace with flat tesselation.

I do not know whether my base colour is the problem or normal mapping . Could you just help me out with it as this is totally undiscovered problem by me.

And about testellation I already figured out that it could be the problem . I tried it with PN Triangles and flat testellation but its the same . And speaking about the scratch build is there a way that i could copy it in a new material and it would work.