I get this error on crashing when i am inporting an fbx character its only 20mb in size: Assertion failed: OutTangentZ.Num() == NumWedges [File:D:\build++UE5\Sync\Engine\Source\Developer\MeshUtilities\Private\MeshUtilities.cpp] [Line: 2084]. Can anyone tell me how to correct this or whats causing it. I have a 4090 nvidia gpu and planty of vram and ram all is update drivers so im lost on this
Hello there @Pupmike1! Let’s try to figure this one out.
Took your provided error and investigated through the community, this conflict as a multitude of possible causes, main cultrit would be related to either drivers, or your GPU. Let’s test a few solutions:
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Please update your OS to the latest version. Since you already have latest for nVidia, I would suggest a “Clean Installation” option, then picking “Developer” drivers, as these have more stable settings for engine work.
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To rule out hardware issues, in Unreal Engine, adjust your values for engine scalabillty, to ensure your equipment is not being exerted.
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Test disabling Hardware Raytracing from the engine
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Please make sure that no RTSS or overlocking are enabled for your video card while working on the engine.
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Uncheck all SM5 in the project settings (Project Settings → Platforms → Windows).
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Disable motion blur in postprocessing settings.
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Remove and reinstall any mesh packs recently added to your UE.
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Additionally, there are two settings to test in nVidia control panel: Go to Settings, and under Features → Overlay, disable the “Game filters and Photo Mode” option. After that, click on “Manage 3D Settings” in the settings menu on the left, go to Monitor Technology and select “Fixed Rate”. With these changes applied, please restart UE5.
