I have split your post into it’s own thread so I can better assist.
So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
What is the model/manufacturer of the Core and Client?
What is the model/manufacturer of the DAC?