Landscape materials look jagged

Hello. I’ve made a Auto landscape material for my landscape. But it doesn’t smoothly texture the landscape. I got these jagged edges. Please some help me!

Your landscape has no resolution. Try making it based on the recommend sizes:

I don’t think it’s a problem with my landscape resolution. I downloaded an auto material online and it works fine with the same landscape. Is there any way to improve material blending in materials? Thanks for your answer.

Hmm, then I guess it must be the material.

Maybe put the graph up.