Skeletal meshes with disabled mesh sections will flicker in the Hardware Ray Tracing Scene.
Also tested on //UE/Release-5.6, CL:45232827
1. Download the attached test project and open
2. Execute the console command "Showflag.RayTracingDebug 1"
3. Open the asset "/Game/SKM_Manny_Simple"
4. Observe the flickering torso in the Skeletal Mesh Editor
5. In Asset Details -> LOD Picker -> LOD 0 -> Sections, right-click Section 0, and enable it.
6. Observe the flickering stops (after the asset builds)
7. Disable section 1, as in step 5
8. Observe the flickering returns
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-353004 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 5.6, 5.7 |
| Created | Nov 7, 2025 |
|---|---|
| Updated | Nov 7, 2025 |