How do resources impact composition speed?

[tobarstep]

I have a large job with many external resources, both image and tagged text. Currently I'm inserting them into my document using syntax like:

return CreateResource(xxx,xxx);

 

I'm wondering though if composition would be quicker if I brought everything in as a pre-defined resource and just used:

return Resource(xxx);

 

I don't really want to go change them all just to test it; anyone have experience in this area?