Hey @Michael_Blair — Thank you for the detailed response!
Just to clarify the above, do you experience these difficulties in both the study and the theatre? Or is it exclusive to the theatre?
The Nighthawk switch looks like it may be a managed switch.
I usually like to mention that we’ve tracked a number of issues to in the past to managed switches(examples: here, here, and here).
The simplest way to confirm whether the switch (or its settings) are contributing to these symptoms would be to temporarily test with the switch removed from your network. Whether things improve or not, the results of that test would be a great data point.
I would also recommend enabling flow control on the switch, as we have seen that settings resolve a number of issues for other users in the past.
Are there any active antivirus or firewall on the Core machine? If so, try disabling them and see if you experience the same behavior.
In the past, we’ve seen that some have had success using Google DNS to improve their TIDAL experience. Try following the instructions in that link and see if the experience improves.