DC Issues

What's with all the dc's i either get the 5105 code or more frequently just poof client gone. its not my connection my isp my transfer speed or my equipment. im having this issue on multiple accounts and multiple pc's, also its not just when there is an event going ive had this issue for about a week on several accounts its every 15 minutes or so i have lost all my ashkina dungon runs on 2 accounts most of them dcing with in an hour of starting them. Please be advised im not looking for some dumb comment or canned responce im seeking a solution for the issue thats final not guess work or passing the blame onto me or my connection i can assure you that aint the problem. im gonna be polite this time dont insult me or you will feel the flame and my anger in a very public manner as i have become tired or that approach from you.