Assertion failed: PointFaces[PointIndex].Num() >= 3 [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\SkeletalMeshComponentPhysics.cpp] [Line: 3181]

After a lot of experimentation I think I figured out the issue. I had a mesh with a corner (wall corner mesh, 90° angle) using auto convex collision. This kept making the editor crash when the cloth would come in contact with it. The simple fix was to manually add box colliders to replace the convex collision of the corner mesh. I also had some other meshes which caused issues such as those using complex as simple. When in doubt try simplifying complex collisions for simpler ones as the poster above mentioned, that fixed it. No more crashes.

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