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Under Consideration for 6000.6.X
Votes
16
Found in
6000.0.66f1
6000.3.4f1
6000.4.0b5
6000.5.0a5
6000.6.0a1
Issue ID
UUM-132599
Regression
No
High MeshSkinning duration when using Vulkan
How to reproduce:
1. Extract and open the attached “IN-130133.zip“ project
2. Navigate to “File” → “Build Profiles”
3. Select “Windows” and “Build” the project
4. Download, install, and open “RenderDoc”
5. Select the “Launch Application” tab
6. In the “Executable Path” field, enter the built project’s executable path
7. In the “Command-line Arguments” field, enter “--force-vulkan“
8. Press the “Launch“ button
9. Once the project is running, click the “Capture Frame(s) Immediately“
10. Double-click the capture in the “Captures collected:“
11. Navigate to the “Event Browser”
12. In the “Filter“ field, enter “MeshSkinning.SkinOnGPU“ and press Enter
13. If needed, expand the “FrameTime.GPU” entry and select “MeshSkinning.SkinOnGPU”
14. Navigate to the top of the “Event Browser“ and click the clock icon
15. Observe the value in the “Duration” column in the “MeshSkinning.SkinOnGPU“ row
Actual result: Duration is significantly higher with Vulkan than with DirectX11 or DirectX12
Expected result: Duration should be comparable across all graphics APIs
Reproducible with: 2023.1.0a1, 6000.0.66f1, 6000.3.4f1, 6000.4.0b5, 6000.5.0a5
Reproducible on: Windows 11 (Nvidia RTX 3500)
Not reproducible on: Windows 11 (AMD RX 6800 XT)
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DylanSimpsonOctoGames
May 22, 2026 10:41
I also ran into this issue on Linux. As OpenGL and Vulkan are the only available graphics APIs on Linux, this makes GPU skinning completely tank performance on all Linux distros and renders the editor AND standalone player basically unusable on my end. OpenGL seems to handle even worse.
specs:
Nvidia RTX 4090
13th gen Intel Core i9
64 gb of ram
Kubuntu 26.04 LTS