BLM concerns (End Game)

[ViviAnimus]

483 DPS on T6 seems a bit excessive, don't you think. Perhaps you meant T8. Because 483 is already pretty high on T8 which is basically a static fight for the BLM. Which player achieved this, if I may ask? Because it's just so surprising to me. Can you please watch my video and tell me where the 120 DPS is gone to? https://www.youtube.com/watch?v=DMkl_oWFFA8&hd=1
By the way, yesterday I pushed 340 DPS on T9 (end), I don't think I'm a bad Black Mage.
Also, I'd like to ask a question. You know on T9, sometimes I too go to middle for Termionic Beam, right (wrong spelling most likely). When he is about to jump my cast is in the middle (timer) and it does not finish when he goes behind me even if I turn my camera toward the boss. I've seen players which casts have not been interrupted. I play with a controller.