Lag/Freeze to load screen mid-game

[Dreamtide]

The last week or so I've had the game lag out so hard it goes all the way to the load screen. Usually it lasts somewhere between 20 seconds and up to 5 minutes. It's happening pretty frequently too.
System-wise, I'm not showing anything going over about 40%. I'm running a GTX 970 with 16g RAM and an AMD 9370 8 core.

The only thing I can think is causing it is I'm building a pretty massive station right now; is the engine just not able to handle what the game allows? Even if I'm in another sector?
I just wanted to touch base here before I started thinking about starting over or anything drastic like that.

[CBJ]

Very large stations, particularly those with a very large number of production modules, can cause performance issues. I've heard of these being manifested as short freezes or more general performance issues in various situations, but I've not heard of those issues disappearing on their own after a few minutes. Note that we are looking into improving performance in this situation, but clearly there will always be some performance impact of having that many objects in one place in the game.

Perhaps if you could provide the rest of the information requested at the top of the forum, along with a savegame showing the situation you're in, someone might be able to look into it further.