Did something change with the memory calculation?

My game used to be just under the 100 but after updating the editor it’s now over 100 just about everywhere. I haven’t added anything. Just curious really.


Hey, you can take a look at :

My solution was to duplicate the level and use the duplicated level in the GameFeatureData, it decreased the memory a bit.

Hi @im_a_lama & @ruggy,

Did you notice that there was an update to 25.11 a couple of days ago.

Regarding memory, have a look in your “World Settings” if you don’t see it docked bottom right go to WINDOW > World Settings…,

  1. Check/Tick “Enable streaming” is on.
  2. Temporarily enable “Preview Grids”.
  3. Expand the “Grids” section.
  4. Look at the size of your cells (I have mine set at 6400 but you might like something bigger) the smaller the cells the more granular will be the memory calculation.
  5. Look at the “Loading Range” ie; That’s how much is kept in memory at any one time and what the player can see (My loading range is set to 10000 - Ten Thousand)
  6. Make certain that your biggest assets & devices are spread out to less memory heavy areas, or are in different cells. I did an experiment where I put all the vehicle devices & 6 BIG Prefabs in the centre of a brand new landscape, it was about 150/100 - then I spread them to individual cells AND checked nothing heavy was within the same “Loading Range” and it went down to around 75/100.
  7. Look in the “Message Log > Memory Test Results” (After uploading to a Private Version & performing a Memory Test) There is a new line at the top with a link to the “Highest Memory Location” on your island.

Hope that helps Guys!! :smiley:


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I don’t see what you’re talking about :joy:
What's New in Unreal Editor for Fortnite

Thought they just added some shotgun, but it’s actually great to have this hidden insight, thank you!

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@ruggy Thank you for your report! We would like to look into this further, would you be able to submit a bug report using the form available here? Fortnite Creative

OK done.

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In my own project, certain prefabs stopped steaming properly after the update and, as a result, increased the data everywhere on my island. This is not the first time that this has happened to me either; in the past, the only way I was able to fix the issue was to delete the original prefabs and replace them.

How could you tell which ones weren’t working?

I had to playtest the island in a live edit session to tell which one’s weren’t working. I could tell because no matter how far I moved away from them, they would still be visible, even when other prefabs nearby them weren’t.