Which option puts less strain on a gmod server?

[Kethus]

I was wondering if it would cause less lag and/or less downloaded content if someone was to make a few male models and a few female models, one for each face, and have each model have all the available clothes as bodygroups. Would that be better than having a separate model for everything, or could be worse, if the machine has to render all the bodygroups, even if they aren't seen? I saw something similar in the workshop, but can't find it to test it.

[ArcHammer]

I don't think it would really reduce much lag, it's mostly the players and the props that cause the lag.