Hi Notiusweb,
I have tried with an abc .orbx, exported from c4doctane, greater than yours, without problems:
Maybe there is an issue in DAZ while exporting in abc more than one character
Because I have also tried with a simple DAZ scene with one character, and it has worked as expected.
But I have not large scenes in DAZ for testing, sorry.
Do you mind to share the scene with the DAZ devs for further investigation?
ciao beppe