Multiple references vs Multiple instances of Resources - which has better performance in a session and why

Hello Delmia User Champion community,

A quick question: Which of the following scenarios will result in better simulation performance in 3DExperience ? 

A single resource instantiated X number of times in a Manufacturing Cell or

X number of unique references of the same resource used X times in the Manufacturing Cell ?

An explanation of why would also be greatly appreciated. 

As always, thank you for the great discussions and tips-n-tricks in the use of the platform.

Regards,

Omar