Posted on Oct. 5, 2020, 1:51 p.m. by crute • Last updated on Oct. 5, 2020, 7:42 p.m.
(Change and apply scale for weighting. DAZ topology causes this problem in the genital portions. The usual workaround is to scale up the mesh by a factor of 10, apply, weight it and then scale it back down to 0.1 and apply again.)
(separate by parts and auto-weight these individually)
(Enable "Face Orientation" or Normal Display from the Overlay Menu to find the offending areas, then chose either Mesh > Normals > Recalculate Outside or Recalculate Inside to make the normals conformal again.)
(That is a bone property; select a bone, check the "Deform" box)
(technically the same as 1, remove with "Merge by Distance". Be mindful that this may mess up your topology and weld things together that should stay open, like mouths or genitals.)