Unreal Engine Issues
Unreal Engine Issues
Crash when using Mesh Reduction on ScotsPine_01 for LOD3
UE - Graphics Features - Jan 30, 2017A crash occurs when trying to use the Mesh Reduction tool for the ScotsPine_01 static mesh from the Open World Demo collection. The assets from this project are usually very processor heavy due to ...
When very far out from the map origin, large static mesh is not streaming in until player is close in world partition even though it's within loading range.
UE - World Creation - Worldbuilding Tools - World Partition - May 7, 2025Context World Partition has a distance-based level streaming system that provides a complete solution for large world management. Problem The problem is that when the player and large static mesh a ...
Costs of Static Lights on Render Thread
UE - Graphics Features - Jun 9, 2016A Japanese developer's making a scene that has over 4000 static point lights. They thought the lights don't affect rendering in runtime. But they realized the RenderThread's costs become bigger. I ...
[CrashReport]UnrealEditor-Chaos!Chaos::TEventContainer<Chaos::FCollisionEventData>::DispatchConsumerData() [EventManager.h:214]
UE - Simulation - Physics - Mar 14, 2022Generated from CrashReporter Error Messages:Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 691] Array ind ...
Vulkan leaks memory when opening and closing windows
UE - Rendering Architecture - RHI - Nov 22, 2019As described here: https://udn.unrealengine.com/questions/532725/index.html (1) Start Prebuilt Vanilla 4.23.1. with Vulkan enabled (2) Create a new project (3) Drag and drop the Sphere from “modes ...
Using Attach To in Construction Script Causes the Editor to Crash
UE - Gameplay - Blueprint - Nov 17, 2015After creating a blueprint with a box trigger and a cube component, attempting to use an AttachTo (Box) node and then attaching the cube to the In Parent socket compiles without issue. However, if y ...
Plane Constraint Normal is not Properly Reset
UE - Simulation - Physics - Jan 26, 2016In the Character Movement Component, setting the Plane Constraint Normal to a value other than default, and then attempting to change the value back to the default does not revert to the default val ...
Split Pins on a referenced Macro Library will crash the editor on restart
UE - Gameplay - Blueprint - Mar 3, 2016Split Pins on a referenced Macro Library will crash the editor on restart 2 callstacks include, one for 4.10.4 and one for 4.11 Preview 6 User Description: I got some macros in my Object Macro Li ...
Audio Components ignoring Start Time set by Play node on Android
UE - Audio - Jul 15, 2015Setting the start time within the Play node for an audio component does not function when deploying to Android. The set up works fine when playing on the PC, and the sound functions on the Android ...
Light function does not work with volumetric fog when not compatible with light atlas
UE - Graphics Features - Mar 28, 2025Light functions do not work as intended with volumetric fog when using clamped mask textures which are not compatible with the light function atlas. In light functions materials, when using any UV ...