THE WORLD SUMMIT
Three times I have gotten to the end of this story episode and been disconnected when the dragon is near dead.
A friend had that trouble (turned out to be a problem with the computer, possibly both GPU and CPU, only we didn’t know that at the time). We managed to help him through it by letting him leech the instance:
- Two of us did all the work.
- We asked him to turn his graphic settings to minimum.
- We “forced” him to stand in a corner, facing away from the fight (or around the corner, when feasible).
Admittedly, this was not much fun for him (and the trial/error on all our parts to figure something out that worked …well, let’s just say, our eyes weren’t bleeding by the end, which surprised us). However, it got the job done.
Our friend was able to see/participate in most of the story (prior to the various DCs), so it could have been a lot worse.
tl;dr ask some friends/guildies (or even strangers) to carry you through it and work with customer service and/or a local tech-savvy person to trouble shoot the DCs.
Good luck.