Unreal Engine Issues
Unreal Engine Issues
Landscape Tessellation shadow depth performance cost higher than expected
UE - LD & Modeling - Terrain - Landscape - Aug 23, 2016Using tessellation on Landscapes causes a greater impact in performance than what is expected. In the screenshots provided there is a comparison between tessellation disabled and flat tessellation ...
Landscape DFAO shadowing artifacts in Standalone and packaged
UE - Graphics Features - Oct 25, 2016The Heightfield from DFAO when playing in Standalone or a packaged game has darkened shadow artifacts for the level. Workaround: Use r.AOGlobalDistanceField 0 to disable the Global Distance Field. ...
Instanced Static Mesh components that are part of a Blueprint aren't visible in Standalone Game
UE - Gameplay - Aug 9, 2017Instanced Static Mesh components created through the Construction Script aren't visible in Standalone Game. Collision is still present. They are visible in all other play modes and if created on Eve ...
Characters using NavWalking on server have noticeable jitter on clients at lower framerates
UE - AI - Aug 23, 2018AI nav walking doesn't allow clients to set a "Base" for the character (SetBase from UpdateFloorFromAdjustment), so there is no floor result on frames where there is a net update. This causes simula ...
Unable to Import Alembic Files in UE4
UE - Editor - Content Pipeline - Import and Export - Feb 25, 2020We have written a plugin for UE4 that allows Unreal users to import and set up Megascans assets into Unreal Engine. Recently we added Alembic files to our assets and also updated all our plugins to ...
Regular UMG Widgets can be reparented to editor widgets but do not work.
Tools - May 11, 2020This may just need to be closed, we may not be able to control this at such a level. This really comes up more than you would guess. I think almost everyone has made a widget, wanted to call Edito ...
changing maps while AudioCapture component is attached to player causes engine to hang.
UE - Audio - Jan 3, 2023Reproduced 3/3 times, issue does not occur in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed Regression. A large amount of warnings are generated upon investigating project log. Here's a small e ...
Screenspace Denoiser creates artifacts for Ray Traced Shadows
UE - Graphics Features - Ray Tracing - Nov 13, 2023Screen space denoiser creates two types of artifacts: artifacts around boundary for general lighting The artifact is there before 5.2 but since the ray traced shadow denoiser denoises on the sqr() s ...
Skeletal Mesh component that uses Anim BP does not translate after swapping root bone on particular Anim section in Sequencer
UE - Anim - Anim in Engine - Apr 19, 2023Repro Rate: 5/5 Regression: Unconfirmed - Functionality is not implemented in previous version Skeletal Mesh with default slot Anim BP applied does not translate after Swap Root Bone on particular ...
Runtime virtual texture sometimes shows corrupted tiles
UE - Rendering Architecture - Apr 28, 2025Some licensees have reported seeing intermittent corruption of runtime virtual texture tiles. This hasn't been reproduced at Epic. Usually this shows up as some small percentage of rendered tiles l ...