I'm trying to setup discrete activities for each step of a macro, but the MSC-400 seems to take a very long time to execute.

For example, I have macros for the following:

[Turn on TV]
[Set HDMI switch to Input #1]

I'm using nested macros for each step because this way I can change the -contents- of the nested macros without needing to change the main macro itself.

Does that make sense?

The alternative is to copy the actual IR/RS232 commands into each macro and then if a piece of equipment changes you need to change -everything- instead of the nested macros...

The disadvantage is that it seems like the MSC-400 takes a very long time to execute a nested macro. If I don't nest macros, but use the exact same IR/RS232 commands, it seems to execute much, much faster.