Check the BI logs to see what it says. Not sure that's what it is but BI drops cams much easier than some other VMS/viewers. And it takes a little while to recover when it does so you'll see it more. When it happens, check the time stamp in the Amcrest/on camera and see if it's actually moving or stalled. e.g., Some crappy Wyze cams I have can stall out for 5 or 10 seconds and their app looks like everything is fine unless you look close to see that the time's not moving. Never drops them, just shows a static image. BI balks immediately and drops them and throws up the problem screen until some time passes after it recovers.