Unreal Engine Issues

AssetRegistry has poor performance when a large map is resaved: Directory IO

IO cost of directory scans is one of the costs present in the AssetRegistry when a large map is resaved. Maps can have external actors which all have to be rescanned and reported to the map for incl ...

Expose light depth and position to Light Functions

Users have requested that light depth and light position are made available to Light Function Materials.Light Depth We seem to be calculating the per-pixel distance from the light to the surface in ...

Cinema4D - Material transparency will import with low fidelity to original material

Vertex Painting - Unexpected behaviour when painting Skeletal Mesh with Low Radius Brush

Unexpected behaviour when painting skeletal meshes with small radius brush. This does not occur with static meshes. Confirmed in 4.25 MAIN @ CL 9730599 ...

Exponential Editor Slate Performance Cost When Editing An Asset With Nested Instanced Structs

UDN Issue: [Link Removed] ...

Actors in a folder in outliner are moved to the top level by duplicating the world partition level with WorldPartitionRenameDuplicateBuilder

LLM PlatformProcessMemory calculation ignores VRAM, and its calculation of how much memory is used by the process is too low

FLowLevelMemTracker::TickInternal() the ELLMTag::Total (and therefore ELLMTag::Untracked) memory amounts are calculated based only on the result of FPlatformMemory::GetStats(), which on the Windows ...

Vive - Motion Controller Component - Active Scene Capture causes 'Low Latency Update' lag

When a scene capture is active, attachment will lag behind parent. (Similar to [Link Removed] ) ...

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

The AABBTree spatial acceleration structure goes off-sync when physics substepping is enabled in a "low" framerate environment.

When you enable the physics substepping, if you run the console command p.Chaos.Solver.DebugDrawSpatialAccelerationStructure 1, you can see how does not follow the physical object. The user that rep ...