I have been looking for a way to permanently throttle these two processes. By default, they are all or nothing processes killing my network connection unless I manually "pause uploads" for iPhotos (nsurlsessiond) or killing/logging out of iCloud for cloudd.
I don't mind them running in the background but would like to control their bandwidth consumption without killing them off completely. Similar to the way that I can throttle oneDrive upload/download (which to my chagrin, Microsoft does this better than Apple in this case!)
Thanks in advance.