Hi man!
You are not the only one who is experiencing those issue with the network overall.
I wrote this post today, have a look:
The MS I’m getting (here in Australia, sydney, frostmourne server) is way crazy…
By the way, I’m playing a random battleground and is the same history. Big MS. As soon as i left the instance and return back to bolarus, the ms gets fine again.
This is affecting my play ability, not sure if I should playing the game with this issues. I literally don’t know how to fix it or how can i manage it.