Normals dont seem to update with bone movement

Is there any way to fix this? Tried from unity 2018.2 and 2018.3 and I get the same issue.
Used standard shader with no change.
Even Tried lightweight render pipeline with the same thing.
Some normals seem to animate ok but issue is really noticable on the cheeks in the screenshot.
This is right after exporting from FBX blender to unity.

skinnedmeshrenderer().sharedmesh.recalculatenormals() seems to recalculate against the base pose and I still get the same flat looking shading.

 

Update. Adding a cloth component seems to get the normals to update properly but I dont want to waste resources doing cloth calcs on a mesh that doesnt need it

 

This thread is 8 years old and it still has the same issue :/

https://forum.unity.com/threads/normals-on-skinned-meshes.57846/

unticking the cloth box doesnt seem to work anymore either.

 

I'm stuck on the same issue and with the same results. So far I'm resorting to the script posted here:
https://forum.unity.com/threads/deformed-geometry-shading-normals-wrong.347962/

But this is likely even worse performance-wise than using the cloth component. Have you found a way to add cloth to your mesh without it deforming anything, to get the benefits of the normal calculation accuracy, without your face becoming a mushy goo?

 

Also looking for a better solution. Wish we could see how exactly the cloth component accomplished this.