VFX and SFX replication issues

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?

Devices

Summary

SFX played with an Audio Player Device and VFX played with a VFX Spawner Device had issues with replication range. The Audio Player Device seems to be replicating its state within a certain, uneditable replication range without RepNotify functions. That means if the player is within the rep range of a device, and activates it, the looped sound starts and is continuously played e.g. 30 seconds controlled with a Timer Device or Verse script, then within those 30 seconds, the player leaves the replication range, he will hear the sound forever. Returning to the Audio Device’s replication range doesn’t update the client-side state of the Audio Device, so the looping sound never stops.
It is similar for VFX Spawners - activating a continuous effect like for example Laser Beams, moving far away from it, disabling it doesn’t update the VFX Spawne state for players far away however, it looks like their state is replicated with a RepNotify function, so coming back to VFX Spawner’s replication range turns of the VFX, but sadly on the server, and for app players standing close to it, it has been disabled long ago.

Steps to Reproduce

  1. Place an Audio Player Device and a VFX Spawner Device.
  2. Assing a looped cue to Audio and a continuous effect to VFX.
  3. Activate them both with a trigger or a button when standing next to them.
  4. Activate a timer with 30s delay that will disable both SFX and VFX device.
  5. Move far away from those devices before 30s timer ends.
  6. Wait longer than 30s.
  7. Notice that you can still hear the sound and see the VFX (make sure attenuation is greater than the replication range, which is unknown but not big enough).
  8. After a minute or so, go back to those devices.
  9. Notice that VFX gets disabled when you close enough, but the sound loops forever.

Expected Result

  1. VFX and SFX have custom replication ranges so I can decide whether to hear them or see them regardless of how far I am if my Island requires that.

Observed Result

  1. The Audio Device plays forever regardless if I am in its replication range or not.
  2. VFX Device shows VFX after being disabled until I get back to its replication range.

Platform(s)

PC

2

Is this still happening after the update?

3

Yes, I just tested it with the VFX. I activated the VFX spawner with LaserBeams preset when I was standing close to it. I enabled a timer that OnSuccess disables the VFX, and then I ran away very far. The timer finished, VFX was disabled by it, but I was observing it being active until I moved closer to it.