Unreal Engine Issues

UE-233789

Improve performance when creating multiple Data Layer Instances

Improve performance when creating multiple Data Layer Instances

Description
  • Every time AWorldDataLayers::CreateDataLayer is called,  UDataLayerManager::ResolveActorDescContainersDataLayers() gets called and iterates on all actordescs of the world.
  • When creating multiple data layer instances back to back, this call will slow down the process. 
  • Either add a way to batch create multiple data layer instances and call ResolveActorDescContainersDataLayers once OR add a new API that scopes the creation/destruction of data layer instances and suspends temporarily the call to ResolveActorDescContainersDataLayers. When exiting the scope, call ResolveActorDescContainersDataLayers if any data layer instances were created/destroyed.
Steps to Reproduce
  • Create multiple Data Layer Instances using AWorldDataLayers::CreateDataLayer
  • Notice that each call will trigger a call to UDataLayerManager::ResolveActorDescContainersDataLayers() which iterates on all actor descs of the world.

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Unresolved
ComponentUE - World Creation - Worldbuilding Tools
Affects Versions5.5
Target Fix5.7
CreatedDec 10, 2024
UpdatedApr 14, 2025
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