it sounds like this would be a question better asked in the unity forum where chances should be greater to find people having similar issues.
in the vvvv forum one could only wonder why you’re trying to go this route at all. you say “I’m working on a project in which i want 3d objects (mainly made in cinema4D) to react to sounds and video capture in realtime” that sounds like a perfect job for vvvv itself. and you could skip network communication alltogether. or are you missing something specific?