Parallax Occlusion problem

Today I made a new shader according to this lesson.

Nothing still does not work, even though everything seems to be right.

Also, I tried to turn off the heightmap, and compare the result with the attached map.

There is no difference, beyond that height map I have is not working. At the same taime shader with tessellation it works fine.

However, I had a suspicion that perhaps the case in the settings of the graphics card or computer. I tried to test the parallax shader in Unity 3D, and here And here that I’v got

113911-unity3d_pom_testo.gif

When I change the height parameter, the plane with the bricks just a little pushed back, like in Unreal Engine, but the effect of the surface with dimples is not obtained. Could be some setting that I have not included and therefore parallax occlusion “does not see” height map?