I’m not sure if you’re still looking for help on this, but I’m trying to get this same pipeline to work for a physically based rendering version of a previous ZapWorks project. I’m able to get static gLTF exports successfully into Studio now but if I try to export a gLTF or GLB directly from 3ds Max with animations it causes an “Unexpected end of JSON input” error in Studio. There is a way to work around that (use the BabylonJS Sandbox to export the scene as a new GLB and import that instead), but I have also seen a very significant jump in file size if I do that (which caused lots of other problems).
So yeah, still trying to figure this one out but I will try to post a guide of sorts to the forums if/when I can figure it out as I’ve been taking notes, heh.