Skilled Interaction Device events accumulate internally, causing severe lag after repeated use

Summary

When using the skilled_interaction_device, repeated interactions (Perfect / Good / Bad / Cancel) by multiple players appear to accumulate internally.
Even if each event is fully handled in Verse, after about 2 minutes of continuous interactions by two players, the entire game begins to lag severely.

This suggests that the device’s internal event handling queue may not be cleared properly, causing performance degradation over time.

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

  1. Place a skilled_interaction_device in the level.
  2. Attach a button so that pressing it starts the interaction.
  3. Add the following simple Verse code to capture the events:

interaction_test_device := class(creative_device):

interaction_test_device := class(creative_device):

    @editable
    InteractionDevice : skilled_interaction_device = skilled_interaction_device{}

    OnBegin<override>()<suspends>:void=
        sync:
            loop:
                Result := InteractionDevice.PerfectInputTriggeredEvent.Await()
                Print("Perfect")

            loop:
                Result := InteractionDevice.GoodInputTriggeredEvent.Await()
                Print("Good")

            loop:
                Result := InteractionDevice.BadInputTriggeredEvent.Await()
                Print("Bad")

  1. Have two players repeatedly press the button to start the interaction.
  2. Continue spamming the interaction for about 2 minutes.

Expected Result

Each interaction event should fire and clear normally.

Game performance should remain stable regardless of repeated interactions.

Observed Result

After ~3 minutes of repeated interactions by two players, the entire game lags heavily.

It appears that Perfect / Good / Bad events are not being released properly and accumulate internally.

Platform(s)

PC (Windows 11)

UEFN (Unreal Editor for Fortnite)

Island Code

0269-9911-2581

Additional Notes

This issue occurs more promi when two or more players a

Because my island’s core gameplay relies on this device, this bug severely impacts play

I kindly request urgent attention to this issue.

FORT-978626 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.