delay caused by sending movies through the router?

Hi,

I was wondering if any delay could be caused by sending my movies through a router object. Below you can find an example patch of what i'm trying to do.
I use this 'routing technique' throughout my patch, e.g. for dynamically selecting sources or 'snapping on' different optional effects and filters.

I believe that this technique could be one of the problems in my patch causing a lower framerate. So you probably hear me coming already,... is this a good technique? Or are there better (best) practices for doing this kind of dynamic 'routing'?

thanks in advance
david