In short, I suspect that many different duplicate models are being preloaded whether or not they are in frame.
It might help resource load to load each model a minimum of once, and then call these models to the graphics card only if drawn. Further optimisation gains can be achieved by lowering poly count based on symmetry and distance.
In terms of model load time we would only lose the effort to call the model from memory, and the game would not need to keep a built up, busy sector loaded at the same time.
I'm making these suggestions based on inference so it is quite possible you have solutions for preload and distance already. Revisiting these solutions with modern technology could still be worth performance gains when you have time.
I've had to guess at where to place this - does this belong in Beta chat? I don't think so, because this isn't something being visited in beta right now, at least as far as I can tell. Technical support might be a good fit, but the game may well be working as intended with any solutions you may have for this. So I'm guessing and placing this in general discussion.

The game is awesome, but players will keep building megastations without the slightest thought for what the computer can handle. (But you know that already.
