Ethernet streaming and occasional white noise on Windows

[AlexS]

I would not sort on CPU usage - I'd sort on the process name, since that way it's easier to compare before and after (as you rightly pointed out, CPU usage is volatalie). So, capture the processes before the white noise occurrence (make sure you click "Show Process from all Users"), then do what it usually takes for you to recreate the white noise, and capture the processes again. Hopefully, there will be a meaningful difference. Try to run as few programs as possible, not to muddle the picture with extraneous data.

The problem is that there are so many processes listed that you need to scroll through the list to view, they will not all fit on the screen. This is why I filtered on usage. I also have some screen shots taken during normal listening, where the CPU usage for Devialet AIR is shown as 0%. (!) So I am beginning to wonder if this method actually has much value? Is there a better way of doing this?

You could take two separate screen shots, if the processes don't fit one screen (I know they don't).
Observing the processes before and after may have some merit, but I thought you said the problem only happens to you at higher resolutions. If you never get it with JRiver and WASAPI, with the 16/44 format (is this the case?), I don't see how this can be caused by an interfering process.