Mr, I know you are expecting results from Mr Nate, though until he gives his own results, I want to give mine.
I do not get crashes, but it might be because my laptop is a high end one. I get screen freezes and response skips from laptop if I do what you request. So it is like the laptop is barely hanging on instead of crashing.
It is also correct that if I select 2000+ textures I get 12x more memory usage which is the screen freeze limit for me. It also does not get back to normal as long as I don’t restart.
I assume your crash is due to low memory. Maybe you should have an empty level opened up just for the sake of packaging after you open the editor.