PC players unable to view custom textures/materials

Summary

I published an update to my map this morning (7/28/26). Immediately after, I started receiving reports from many players telling me that the map had no textures. I only received reports from PC players, console players were able to update just fine.

This was a small update that only included a new animation, shown here: zoramaps on X: "cya! https://t.co/YPJ5lzAHGH" / X

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

  1. Login to Fortnite on PC
  2. Load into a map on PC that has been updated since this morning (~9AM EST, 7/28/2026). I used Ballistic R (2276-7799-6979)

Expected Result

The map’s custom textures should display properly

Observed Result

Custom textures and materials do not display, and are either transparent or replaced with the default grid material

Platform(s)

PC

Island Code

2276-7799-6979

Upload an image

Video

Additional Notes

-I will revert to the prior version and see if it resolves the issue
-The update prior to this was 24 hours earlier, 7/27/2026
-On my local PC that I use with UEFN, everything works fine

After getting more info, it looks like this is an issue with performance mode. I was able to reproduce the issue locally

Did some more testing and was able to narrow down the issue.

When I revert to an older version of the map, everything loads fine. When I add/copy a new mesh/device, none of the textures load. When I delete it, everything works again.

Not sure if I’m hitting a memory limit somewhere, the project size is at 90% and the memory usage is 60k/100k. I can provide more info/project files if necessary.

Before copying this stair mesh (texture works correctly):

After copying the stair:

Reverted to an even earlier version of the project, and making any changes causes the same issue. Deleted my UnrealEditorFortnite folder and reloaded in, still having the same issue. Not sure what’s going on, if this is an actual bug or an issue with my setup. Apologies if that’s the case

Is it happening with custom assets or with fortnite materials?

If it is custom assets, can you open the materials and check the usage flags? (“Used with XXXXX”). Should also be an option to “Auto select usage flags in editor”

Usage flags are optimization to not generate unnecessary shader code. When you “disable a material to not be used with mesh” it then renders as the default cube grid in game.
And on this same case, is completely fine it showing in editor but not in game, since it is a packaging optimization. It also have flags for things like different platforms, asset types, nanite and so on.

My guess is that thing described above. On your UEFN logs should have mentions to things like “material will shown as default in game” for example.

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Thanks so much. I enabled the “auto” use flag in all my materials, and now they work fine. I last updated these materials months ago, so I was a bit confused to check. I wish I knew what caused this issue to pop up since yesterday, but I’m saved! Thank you again.

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