I have a WD My Cloud Home and the Plex Media Server version is 184.108.40.20664, totally outdated and I can’t watch any tv show o movie I have, I tried to set up another Plex Media Server in my PC with the last version and all gone well, anyone know if they are thinking to update it? it 's really annoying to have a NAS and can’t watch anything because the movie stops every 5 seconds. All of this is when I cast it to the Chromecast ultra or when I saw them in my mobile, my internet connection is 600 mb, it’s not for the speed of internet
For Plex have you looked at this. I found it with a Google search.
Are you saying you get 600 Mbps? See example test image below.