I got two out of the three Ivalice raids done and popping on alliance raid roulette. The first boss of Rabanastre goes quite crappy each time (admittedly for me too). There's so much movement, so much dodging, that it takes no time for members here and there to drop. Similar with the last boss of Orbonne. Meanwhile the math boss and the angel/demon mask boss go swimmingly or have veterans warning and explaining mechanics before the pull. Those just feel like damage sponges and take anywhere from 7 minutes to 4.