IP Camera intermittent - logs? debug?

I have six 4k POE IP Cameras, five Lorex and one Hikvision.

I have them defined identically (except a different URI for hikvision).

I have all six in Lovelace in a tab in three vertical-stacks of picture-entity. I also periodically tell google to stream them onto a cast device.

Most of the time they work fine. Once in a while they go a bit nuts, for example twice today the lovelace display had two (the same two each time) missing every other refresh – exactly the same two, exactly every other refresh was a grey rectangle. Refresh and it worked fine.

Or when asking google to stream, often it just gets stuck and doesn’t shot up. Ask again and it works fine.

Clicking a picture item to show video works fine. So far have not noticed that missing.

Anyway… when things go wrong then… what?

The log generally gives no message, at least with defaults. Are there specific log configs you can use to get more data? If I knew what kind of error was occurring I might learn more.

I use a VMS system (Luxriot) and it is perfect, it never seems to have gaps. In manually pulling stills or streams to a browser it never misses. I am not saying they do not have any problems, just that I can’t figure out how to tell what the problems are.

BTW, I’m running HA on a VM which is on a desktop computer with plenty of spare horsepower. I don’t think it relates to computer or memory resources, at least not in the hypervisor.

So… if there are problems with a camera, where do you look? Or how can you turn on logs specific to it?

In case it’s relevant here’s a typical camera:

As best I can tell I have to put the user/password in the rtsp, but it has to be explicit for the still; at least if I don’t do both it doesn’t work. All cameras are hardwired with a real POE gige switch and plenty of bandwidth.