If I had to guess it may because packet loss. But then again I ping my gateway when it happens randomly and its saying theres 0% packet loss so...
Also happens with or outwith WSE
NAs,Eu's Servers too
Notably before I couldn't update the game because Kapersky would say the exe. was a virus. So I unistalled that and was able to update with WSE again.
Maybe Firewall? Im not sure anymore...