Skeletal Mesh deforming/glitching only in Viewport (Normal in Renders)

I’m encountering a strange issue with a character skeletal mesh in UE5.

As shown in the attached screenshot, the character appears severely distorted or “folded like paper” inside the Level Viewport. However, when I render the sequence out using Movie Render Queue or hit Play, the character looks perfectly normal without any mesh deformation.

Here are the details:

  • The Issue: Skeletal mesh is heavily glitched/stretched in the editor viewport.

  • The Contrast: Renders and Play-in-Editor (PIE) look completely fine.

  • Engine Version: Unreal Engine 5.6

  • What I’ve tried: I checked the bone hierarchy and retargeting settings, but since it renders correctly, I suspect it might be a viewport display or GPU skin cache issue.

Has anyone experienced this discrepancy between the viewport and the final render? Any advice on which settings (LOD, GPU Skin Cache, or Raytracing) I should look into would be greatly appreciated.

Thank you!