No. What is being suggested is that you increase the duration of the IR codes themselves. Duration meaning how long each IR code is set to transmit. This can not be done via delay actions in a macro. To do this go to the buttons in which you learned the IR codes to, and double click on the learned IR code in the action list for each. This will bring up a window showing among other things, the IR duration. There you can change the IR duration for that particular IR code from the default setting to anywhere between .01 and 10 seconds.

The number IR codes for my Comcast DVR for instance do not faithfully execute when used in macros for my channel icons. It is very hit or miss. By adding a .15 second duration to each of the IR codes my channel macros now execute perfectly everytime. Very quickly in fact. If your codes work individually, but not in a macro this is most certainly what you need to do.