Interrupts, what are they?

[DxWings]

Alright! Thanks guys! I'm actually not at end game yet but would just like to know that before I get there.
So if I'm getting all the information correct, it's best not to spam these since the enemy builds immunity to it.
However, from using Blunt Arrow, it only seems to last one second, is that all its meant to do, is to just interrupt and not prevent an enemy from casting for a while?

[Estellios]

Alright! Thanks guys! I'm actually not at end game yet but would just like to know that before I get there.
So if I'm getting all the information correct, it's best not to spam these since the enemy builds immunity to it.
However, from using Blunt Arrow, it only seems to last one second, is that all its meant to do, is to just interrupt and not prevent an enemy from casting for a while?

You are correct. However, keep in mind that most of the spells/skills enemies use that have a charge time are the more devastating ones so don't discount it just because you prevent one move. Sometimes that move getting off means a wipe.