Unreal Engine Issues
Unreal Engine Issues
Synthetic benchmark is affected by Scalability Settings
UE - Rendering - RHI - Feb 19, 2025Sumo Digital Ltd. has reported that the synthetic benchmark has skewed GPUIndex scores when changing graphics scalability settings (i.e. r.LumenScreenProbeGather.DownsampleFactor). They are currentl ...
Packed Level Actors will create ISMs with inverted normals when a portion of static meshes have negative scales. This is apparent with two-sided materials.
UE - Engine Scaling - Streaming - Feb 17, 2025Packed level actors will create ISM instances with inverted normals when the selection of meshes used to create the packed level actor contains a subset of meshes with negative scales. This is the ...
Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level
UE - Engine Scaling - Streaming - Level Instances - Feb 12, 2025Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level. The licensee has encountered this in Unreal 5.4 and ...
World Partition grid priority setting taken into account last
UE - Engine Scaling - Streaming - World Partition - Feb 11, 2025From licensee:Editor Grid priorities setting will get overruled in code giving the user false feeling of control – smaller grid cells can load before larger grid cells on the same layer even if the ...
Ambient occlusion causing ghosting for animations when viewport is resized on DX11
UE - Rendering - Features - Feb 10, 2025Tested regression against //UE5/Release-5.4 @ CL35576357 and the issue did not occur. This is a confirmed regression.[Image Removed] Jira Bot attaches conversation thread from Slack [Image Removed]D ...
Deleting transient actor marks level dirty
UE - Engine Scaling - Streaming - Feb 6, 2025The licensee has noticed that the deletion of a transient actor still marks the scene as dirty and asks it to be saved. Checking the source it was noted that the transient flag is not verified on de ...
FLevelInstanceActorGuid::GetGuid issue in Multiplayer
UE - Engine Scaling - Streaming - Level Instances - Feb 3, 2025I am doing some runtime manipulation of data layers and I am running into a check failure due to a zero guid in FLevelInstanceActorGuid::GetGuid during multiplayer testing. When I debug FLevelInsta ...
Foot Placement: Division by 0
UE - MVF Character - Animation - Jan 31, 2025static FVector PointDirectionPlaneIntersection(const FVector Point, const FVector Direction, const FPlane Plane) { return Point + Direction * ((Plane.W - (Point | Plane)) / (Direction | Plane)) ...
Lumen ignores Landscape Holes (Landscape Visibility) when Hardware Ray Tracing is enabled and Ray Lighting Mode is set to Surface Cache
UE - Rendering - Features - Ray Tracing - Jan 31, 2025Context Lumen is the default global illumination and reflections system. Lumen renders diffuse interreflection with infinite bounces and indirect specular reflections in large, detailed environments ...
SkinnedMeshComponent::BoneTransformUpdateMethodQueue is never reset in server builds
UE - Rendering - Architecture - Jan 27, 2025We reset BoneTransformUpdateMethodQueue in USkinnedMeshComponent::CreateRenderState_Concurrent and USkinnedMeshComponent::SendRenderDynamicData_Concurrent but these code paths are never called in se ...