I rewatched the video and noticed the mark about size of displace in cage (it should be bigger only above the details, like 0.35 in strength, before that I prefer to use size twice bigger) and after the baking process I have some much more pleasant result, but the bumps still be skewed (not so much like on picture and on the model I didn’t notice them).
So, I want to clarify: How much truly do the size of displace influence on the baking normals?