I wonder if the additional 100 ms from what I run is enough to cause the disconnect issue or if there is some how a routing issue between you and the server and its causing packet loss. Anyone else having the issue please post your location, the server you play on, and your average ping in ms.
The other thing I could suguest is running a ping test from the command prompt,
Click start and type cmd into the search box and press enterthen type "ping google.com -n 10000" without the quotes while playing when you get dc see if you lost any packets. Would be nice to ping a bliz server but not sure if there is one that will allow prolonged pinging to check for packet loss.
I know I would be very upset if I constantly got disconnected I can handle rubber banding and dieing cause of it but a stright up disconnect is pretty bad, wish bliz would fix both issues tbh.
Will give that a try when it happens to me again.