you can easily drop the astral fire faze if you cast an instant lightning ... in high-end fights, even the best BLMs cant keep with the boss attacks and mechanics and maintain a real focus on the astral fire faze at the same time
Most of the time that you lose your astral fire faze is after casting an instant spell because of the GCD lock of you other spells ... BLM is a cast based job haveing a GCD on such a class that already spends 2.6 seconds doing the abilities is in itself an error in the design of the class and let me tell you... BLM ISNT one of the best classes to play high end it's even statically the lowest job to complete high-end trails and raids ...the lowest