Devices have major delay in Public/Private Island, but work perfectly in UEFN Sessions

haske ツ
Wed, 31 Dec 2025 16:59:43 +0000
Issues and Bug Reporting

Summary

In the UEFN editor and in Creative playtest, the map works correctly. All devices (triggers, targets, teleporters, counters, sequencers, etc.) react instantly.

After the map is published and played using an island code (private or public), a serious bug appears:

Devices are active but react with a very long delay

Every interaction (for example shooting a target, activating a trigger, or pressing a button) happens only after up to 20 seconds

If you trigger something multiple times, all actions are delayed and then happen at the same time after up to 20 seconds

This happens again with every interaction

The bug affects all device types, no matter how many are used, how they are set up, or how big the map is

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

Create a UEFN map with devices, for example: when you enter a zone, you are teleported. Test it in UEFN.

Publish the map.

Play it via island code.

Enter the zone.

Expected Result

Devices respond instantly, just like in the UEFN editor and Creative session.

Observed Result

Devices are active but respond with about a 20-second delay.

If multiple interactions happen quickly, all actions execute together after 5-20 seconds (sometimes it reacts faster)

This happens with all device types, every time.

Platform(s)

PC

Video

DevicesDelayUEFN

1 post - 1 participant