Is their racial removing DPS loss from channel type of ability?
[Channeled]: Channeled spells do not have a cast time, and begin immediately. However, their effect is measured out in several “ticks” over the time of the channel, with the first tick usually not occurring for at least a second after the channel begins. Damage taken while channeling will foreshorten the spell, but will not delay its effect like with cast-time spells.
I’m not quite sure what you’re asking. But basically, you don’t lose casting time unless something interrupts you completely; silence, stun, disorient, etc.
Channel spells, say you channel for 3 seconds to do a tick each second… if you get hit that’d become like -0.5 seconds… so now you’re only doing 2 ticks of damage instead with the full cast.
This isn’t really much of a thing anymore but it basically makes you immune to pushback. As a caster, when you’re hit by spells or melee attacks while casting/channeling a spell it add extra time. Let’s say I’m casting a Shadow Bolt, it’s cast time is 2 seconds by default, but if a melee is pummeling me, its cast time is increased to like 2.5 seconds.