I'm currently leveling a dragoon as my first job. However, in dungeons I'm sometimes struggling to get the Heavy Thrust or Impulse Drive buffs. I'll sometimes need to HT a couple of times (often from the same spot) to get it to trigger.

When does the game count your position? Is it when the button is pressed, when the animation ends, so an arbitrary point in the middle? I'm wondering whether it's a lag thing, as quite often the enemies will be turning to someone else when I have to try more than once, but won't necessarily turn straight away (at least on my screen).