Hello @Kaiwen_Zhao — Thanks for sharing this report with us, it’s always appreciated!
To start, may I kindly ask that 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.
May I also ask that you verify the following:
- Does this happen for all zones, or just one? If you play to system output, do you experience the same behavior?
- Have you power cycled your Core machine?
Thanks,
Dylan