Congratulations on the new season. I would normally say the game has been outstanding except for this build; I continually receive the error code 1016 - regarding the network connection.
I have broadband speeds with continual service without any interrupts. After reading the forums, I followed the flushdns and recreating the TCP stack; to no avail. Even after updating the network driver and running several other maintenance cleanup, nothing.
This game is particularly sensitive to dropped packets on wireless. Never, ever, attempt to play Diablo III on a wireless connection. There are certain builds and skills that seem to exacerbate this issue so you can run fine with say a Thorn Crusader but get dropped every 2 minutes playing a PoJ Monk.
I play HC almost exclusively and I live in Mexico playing extensively on both NA and EU servers (and currently am tackling Asia since this season was so much fun) and I’ve had exactly 1 dropped connection since the season started.