I have a top down project, so i am thinking that whats in the viewport of the camera is all that is going to be drawn at any given time, so should i even need to stream levels? Low poly, low res, low everything. Is there a benefit to level streaming in this case?
I dont know, but you’re talking about rendering fewer things, and level streaming is about loading fewer things (and ticking them), which also can mean rendering them.
So I imagine it makes a difference for CPU, drive accessions, and RAM even if not for rendering.
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It probably doesnt make a difference if the loaded assets are small or have few references that would require them to load other large or numerous assets
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i’m doing topdown, too…
and… hell… i need level streaming a lot… better said… World Partitioning… cause if the editor has to load the wholw persistent level at once, all the time you work in there… damnit… it would kill all systems…
so… even if not giving you better runtime performance… it saves your editor performance 
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Thanks for the replies! I was just messing with world partition for the first time and i think this is what i need. It seems to be kinda like automatic level streaming?? The problem is that in the editor, i can see whatever i select to see, but cant see whats being “culled” in the game.