Unreal Engine Issues
Unreal Engine Issues
FPS drop when deploying to a Mobile device
UE - Platform - Mobile - Feb 27, 2015The FPS drop off of this users project is significant between version of UE4. I tested this issue on a Samsung Galaxy Note 10.1 2014 edition. I also tested on a iPad air 2 on 8.1. There was a sig ...
Advanced Vechicle Template throws warning about no default skeleton when opening the physics asset
Docs - Samples - Dec 3, 2014DESCRIPTION: If you try to open the physics asset for the Advanced Vehicle template will throw a warning that the physics asset has no default skeleton and that it will be replaced with the default ...
Components tree is ending up with duplicate entries (same pointer added to the list view more than once), causing an assert
UE - Gameplay - Blueprint Editor - Jul 19, 2017This is a common crash affecting users in 4.15 and 4.16. Over 200 unique users have been affected. User DescriptionsCamera Component Drag Drop Error 카메라 컴포넌트를 이벤트 그래프에 드래그 하는 도중 에러 발생 Creating a ne ...
Morph Targets flicker Randomly in Slave Mesh
OLD - Anim - Oct 1, 2015When a mesh is slave to a master mesh, its morph targets will flicker when Played in Editor. This does not occure with the same assets in 4.8. This has been reported by at least two different use ...
Set Actor Location and Teleport from a Character when touching an Actor simulating physics will launch the Actor
UE - Gameplay - Jul 23, 2015Set Actor Location and Teleport from a Character when touching an Actor simulating physics will launch the Actor. User supplied a video demonstrating the problem: [Link Removed] Test project in Pa ...
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 ...