I tried this same strategy myself, but it really isn’t as easy as it looks.
Exactly, we are seeing this as a result of pushing the limits of DPS and timing due to having equipment with multiple materia melded to it. Even though the video makes it look easy, it won’t go so well if you try to just follow it.
However, we did not set the battle up this way so that this strategy would be the fastest and it is an oversight on the developer’s end, so we will be looking into adjustments as much as possible so that various classes, jobs, and DPS rates can participate.
We apologize for this, but please be patient for follow-up information.
(I will be going overseas on a business trip starting tomorrow, so I believe you should hear back on this from the Community Reps.)