When do you LB in DF EX? (DPS)

[Bonbori]

As soon as you get 1 bar on a big pull as a ranged/caster, and/or as soon as you have 2 bars on the final boss (assuming you can get 2 bars before the boss is almost dead, otherwise use ranged/caster LB1 on a big pull before the final boss).

Normally you wouldn't let any DPS use LB1 on a single target because it's a DPS loss on any properly played DPS but in DF... mhm, might as well.

Never, ever under any circumstances hold a fully charged LB for later. In dungeons use LB2 as soon as available, it's not a "finisher", it's damage. If LB ever gets the final blow, that means it's been wasted. As far as I'm concerned, a fully charged LB held for more than 10 seconds is a desperate plea for the tank or healer to yeet it out the window because DPS clearly don't want it. (The only time it's not true is in certain specific Extreme/Savage/Ultimate fights and Alexander Normal where LB has to be used at a specific time by a specific role, but in dungeons, that doesn't matter)

Overall, LB has more value when used to kill little fish in between bosses as they are more dangerous and more susceptible to AoE. The less time a big pull is alive, the fewer cooldowns the tank has to use and the less healing the healer has to do, making it smoother and less annoying for everyone.