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DAZ|Studio F.A.Q (Updated: 2020 Sep 04 1:56 pm)
Subject: DAZ to fbx issues
Have you tried one of the new bridges for DAZ Studio?
There isn't one for SFM, but the bridges are really just FBX exporters and you can find that exported FBX file and textures in a folder called called c:TEMP3D
I mention it because it applies some of the FBX fixes that I would usually have to do in Cinema4D after an ordinary FBX export. It's a longshot but may help with one of the problems you're having.
Something that's worked for me, with the 'wandering hair' problem, is changing the parenting of hair within Studio. I have not used SFM but this solved wandering hair in the Octane plugin.
...but I suspect that the problem is really in how it is being 'imported'. There's not much you can do about that from the Studio end.