Frustum culling can cause problems with THREE.SkinnedMesh instances (see SkinnedMesh: Incorrect bounding box and culling · Issue #14499 · mrdoob/three.js · GitHub). The easiest way to work around this is to disable it: [HELP] 3D model completely disappears when the camera gets close (). If performance becomes an issue with culling disabled on these objects, you can manually override their bounding volumes to a safe size.