Wow that first video is bad lag, really bad, that is just not fair. The second one, is normal, you hesitated there for a second and that got you in the end. I know, the timing is a bitch, you have to move the instant the plumes appear and not stop.

I have run this fight many times, me and my FC do it pretty much daily with no problems since we are "trained" now. BUT having said that, i do agree that the timing you need is borderline unfair. It's extremely hard to dodge all the plumes, bombs or landslides even on a relatively fast connection (105ms ping here) i get caught in the odd plume or what i have most problems with, the bombs.

I think a slight tuning giving it half a second more to dodge would not hurt the fight at all and maybe give people with worse connections a chance.