Just because some of us happen to be lucky and don't experience any connection trouble during this fight doesn't guarantee that the fight is well-designed. The situation that many people who face difficulties with this battle while having close to NONE issues dealing with other fight implies that something is wrong with the battle itself.

This isn't a test of skills anymore. It's a test of connection and your distance between the server, and that is not a wise way to increase the difficulty of a MMO.