delphi – Way to ignore used unit to make code completion faster

My code completion is OK but when I use a 3rd party unit it become editor become very slow. Is their a way for code completion to completely ignore a unit during code completion?

  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, 

  CoreDCore, // i want to use this but should be ignored by code completion