Your comments

I noticed this performance issue appears when the toolbars moves

This is really inconvienient, i would make an option to hide the toolbar while an object is modified to fix this

Hi, 

Your logic only works if the raycast hit is childed to something

I've added a check in the code so object are childed whether or not they have a parent

//Peek 1.3.1, creator.cs line 107
parent = _hit.Value.transform.parent != null ? _hit.Value.transform.parent : _hit.Value.transform