UR824 - ADAT issues - Signal crackling/cutting out

I’m using Cubase 11.5, and a UR824 as my main interface. Last year I expanded my inputs with a Scarlett Octopre using the ADAT function. This worked flawlessly up until a week or two ago. Now, I’m getting the problems as shown in the video. Let me know if there’s anything you can think of that I can troubleshoot that I may not have thought of yet.

Thank you,
Matt

How do you clock the units? 824 as master and Audient as slave? BNC connected? 75 ohm terminated? All cables checked recently?

I have the exact same stuff as you but not the problems.