memes

Mch stands for Machinist, a ranged gun class in FF14, and wildfire is an attack from said class that gets stronger the more hits you land during its duration. The max hits is 6, but enough lag and you can only get 5 of them off in the window. The game has a default 2.5 second global cool down between skills, though some gear and some skills can reduce that. In particular for Wildfire, you combine it with a skill that allows 5 hits of itself plus 1 other at 1.5s per cool down, but if you're adding another .1 to each of those it can add up to miss unless very tight on timing.

Not a game breaker, but if you're trying to push through your best performance because your group is failing at 1-2% you can't really help not being mad at it.

Edit: in addition, the frustration isn't you personally dying in some pvp, but your group of 8 friends you're also holding back on fights. In addition to lowering damage, deaths can wear down your healers mp(and significantly lower your own damage output) so some tight mechanics can be harder to react, especially if your brain has you move wrong at first. None of these by themselves are terrible, but over the course of 3 hours working at clearing multiple fights it can wear you out and kill your enjoyment.