(Critical) UEFN short freeze when duplicating ANY actor, or adding ANY actor to the scene (multiple projects)

General Issues and Bug Reporting
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1

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Summary

When on complicated projects with world streaming enabled, duplicating any asset causes 0.9 seconds of freezing in UEFN, and when you are dealing with thousands of actors for level design, it starts to become incredibly tiresome.

Steps to Reproduce

Open a complicated project with world streaming enabled and a lot of project size/in game memory.

Duplicate an actor by holding alt and drag

Expected Result

UEFN doesnt freeze

Observed Result

UEFN freeze for 0.9 secs (this time scales btw, longer depending how big it is)

Platform(s)

PC

2

I try to edit no more than 50 actors at a time, then the editor will unfreeze after some time after it has finished processing.

Previously I could edit a lot more.