Shadow and specular interference

Sorry for the old version of the question.
Please help us.

It happens with the combination of Unity 5.4.5 p 2 and ShaderForge 1.34
I would like to consult the problem of shadow.

When shadows and speculars are drawn simultaneously in one plane
The boundary of the shadow near the reflection of the specular becomes coarse
The problem has arisen.
※ Please look at attached image

To solve this problem, what do we need to do?

We may need to change the drawing order of shadows and speculars
I guess, but I am not sure.
Also, I do not know how to fix it.

As a precaution we will attach a screen shot of the node tree.

We will be happy if it is helpful for something.