Free everything a build-volume group (or any plate-level group) owns: each object's geometry, its material(s), and each material's map (three's material.dispose() does not free textures, so the bed texture used to leak on every rebuild).
map
material.dispose()
Free everything a build-volume group (or any plate-level group) owns: each object's geometry, its material(s), and each material's
map(three'smaterial.dispose()does not free textures, so the bed texture used to leak on every rebuild).