Being new to DeskScapes, I was simply running the videos offered from the platform....nothing I've created myself.  I currently run Windows 10 Pro, 10,  build 19044.  I was using the latest beta release of DeskScape.  Since this morning, I've uninstalled all apps associated with it.  In the future, I'd like to try it again, but for now, I don't need the frustration.  This was a huge learning experience for me chasing down and identifying the cause of my issue.  I even replaced my network switch thinking it was something there, ordered new NICs, cables, etc.....$$$ wasted, of course.  Who knew?

I don't understand it either....hence, why I posted the question.

I suspected the same and went through many hours of trial/error.  I finally narrowed it down to one Service that I could turn on/off before identifying it.  Once found it was the DeskScapes program, I then went into the program and toggled the different features until I narrowed it down to static pictures vs. motion/video that caused the issue...again simply by toggling on/off - it was obvious at that point. 

I assume you are referring to Animated Backgrounds (Dreams) when you refer to "motion/video."

I am running Windows 10 Pro 19045.2075 and have been running DeskScapes 11 (ver. 10.96, 11 beta 5) for more than a year and have not experienced this issue. There is no reason DeskScapes 11 should be using an inordinate amount of Network resources. It is more likely that something with your system configuration is in conflict with DeskScapes 11 causing this issue.

Have you tried disabling everything except DeskScapes?

Use System Configuration and Selective Startup to disable all services except Microsoft services and Stardock DeskScapes 11. Also disable all but essential Startup items. Reboot and check your Network activity.