I die to his flaming fist mechanic almost every time and a lot of what you said is the cause of it. As soon as a notice he jumps and I start towards the middle whipping my camera around to find him. I see him and start my run away from his fist side and bam, too late! This is the only fight in the game I pull my camera all the way out and it still gets me. I don't die to the other boss's stuff at all or any of Hash's other mechanics.
I also do not understand how you can see the fight every single second. Even on a red mage, I need to look at my bar to see procs and cooldowns and stuff. When I am a white mage I need to keep my eye on the party and alliance bars. Even if I put this bar literally in the middle of the screen I still need to look at it for a second.