PC EU, haven't had any issues, and was online for hours yesterday. If you DC once per day, it seems your connection may have a limit of 24h, and is rebuild after that.
There is also a few minutes time where after a disconnect you can't re-login, and will keep getting different errors till that time is up. This time is there for the server to notice your connection dropped, and can log you off. After that you should be good to go again.
Another thread about disconnects with solutions that may help you: