UEFN memory issue after v40.0

[S_Jerry]

Summary

There is a critical memory issue after v40.0 where computer memory usage is skyrocketing to 90% or more.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Memory

Steps to Reproduce

1. Launch UEFN
2. Open a project

Expected Result

Expected result is once you launch UEFN you will get a memory pressure pop up message. On your computer if you open up the task manager it will show your computer using around 90% memory before a project is open. Once a project is open the number will go up to around 95% even if settings are at the lowest and could lead to a crash in the software.

Observed Result

Launched UEFN and as expected got a message for memory pressure and the memory being used on my computer was around 90% at 88% without a project opened. Once a project was opened the number rose to 95% memory usage. Software crashed within an hour. This is also happening even if the settings in the project are set to the lowest.

Platform(s)

Windows 11

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[Y0UTUBEBEST09]

i am haaving the same issue

[xerex60]

Same issue
UEFN is using around 65–70% of my RAM immediately on launch, and I have 32 GB of RAM. (before the last update it was at 35% ±)

Because of that, when I try to launch Fortnite to strat session to playtest my map, the RAM is already saturated. As a result, either Fortnite, UEFN, or both end up crashing.

At the moment, this makes UEFN completely unusable.
Please fix this asap

[goatjulian]

Same here, and when I import a single model it just crashes/freezes because my memory usage by UEFN is already at 88-96% constantly just while UEFN is open

[Bug-Reporter]

FORT-1079605 has been ‘Closed’ as a duplicate of an existing known issue. Origin Issue: FORT-1078789, Origin Topic: Memory Pressure pop-up occurs too often (40.00)