The game disconnects a lot, either because of some technical issue or because of strict anti-AFK policy, that’s not the point though.
The problem is that every time after disconnect I need to enter authenticator code, which takes a while since I have to get my phone out and open the app. Closing the game and starting it again avoids authenticator, but it’s also painfully slow.
In comparison, WoW does not require authenticator code when you disconnect or log out. Is there a setting in D3 or something I can change?