Simulate Download query

I’ve just started playing around with 2004 after working with MX for a few years. I’m a little perturbed by the simulate download in that it insists on streaming things like shared library assets.

Really what I’m interested in knowing is, how accurate is the simulation supposed to be? It seems to make shared libraries somewhat less useful as you can’t see how your movie will stream at various bandwidths. MX seemed quite happy to show a smooth download sequence but F04 only gives a smooth simulation if it doesn’t actually stream anything in the background.

Is it perhaps wise to ignore this and carry on using sl’s?