Unreal Engine Issues
Unreal Engine Issues
Lighting does not properly affect landscapes under another landscape, even if Static Lighting Resolution is increased
UE - LD & Modeling - Terrain - Landscape - Apr 29, 2015Lighting does not properly affect landscapes that are below another landscape, even after static lighting resolution is increased. This results in some areas that should be completely shadowed to ha ...
World Delta seconds appears to Cause a miss calculation (regression 4.12.3 -> 4.12.4)
UE - Gameplay - Jul 1, 2016If the user uses world delta seconds in a calculation there appears to be some incorrect values. Note there is also a users project attached if you would like to look at that example. ...
Crash launching project with Compat.MAX_GPUSKIN_BONES=75 and Preview Rendering set to Shader Model 5
UE - Graphics Features - Oct 18, 2018Crash occurs when the user launches a project with a +75 bone skeletal mesh actor in their scene with the Compat.MAX_GPUSKIN_BONES=75 config change, and the default preview render is Shader Model 5. ...
Point lights affect indirect lighting on RTGI much less than other types of lights
UE - Graphics Features - Lumen - Aug 4, 2020Only point lights affect indirect lighting on RTGI much less than other types of lights.[Link Removed] Indirect lighting of baked lightmaps look much stronger than RTGI.[Link Removed] Apparently, ...
Distributed HLOD builds always fail for projects not under the Engine Root
UE - World Creation - Worldbuilding Tools - HLOD - Dec 4, 2024In BuildProject.txt, to make relative path to the project outside the engine root, all paths contains “..” after action command directory. D:/dev/UnrealEngine-5.5.0//HLODTemp/f09bf0f5/HLODBuilder0 ...
[Device Swap][Crash][Stadia] - Crash changing audio device from 5.1 to stereo
UE - Audio - Mar 10, 2021There's a crash on stadia when changing the audio device from 5.1 to stereo. There's also a related issue where voice chat breaks when changing from 5.1 to stereo. The background is that CL14889950 ...
Changing preview mesh appears to affect initial transforms of all control rigs in level viewport
UE - Anim - Rigging - Control Rig - Apr 16, 2024It seems that switching the preview mesh in the control rig editor is affecting the initial transforms in the hiearchies of related control rigs in the level viewport. This seems to be due to the c ...
Launching multiple Editor processes in UE 5.5 can throw warnings due to USD Core plugin initialization
UE - Editor - Content Pipeline - USD - Apr 23, 2025Launching multiple Editor processes at the same time with the USD Core plugin enabled can cause warnings to be logged like the following:LogUsd: Warning: Failed to update LibraryPath for USD plugInf ...
With Accurate Velocities from Vertex Deformation and Instanced Stereo enabled anti-aliasing does not affect the right eye
UE - Platform - XR - Jul 8, 2016KevinR: Make sure you are using Temporal AA (TXAA), and I was using SteamVR/Vive With Accurate Velocities from Vertex Deformation and Instanced Stereo enabled anti-aliasing does not affect the righ ...
InstancedFoliageActor experiences issues with floating point precision when far away from World Origin and is not affected by Origin Rebasing
UE - World Creation - Worldbuilding Tools - World Composition - Jul 17, 2020Foliage generated by Landscape Grass Type do not encounter this issue. Only hand painted foliage with foliage tool is not affected by rebased origin. Foliage vibrates when it is located in long dist ...