Spell Interruption Rate questions

[Gergall]

Hello, I tried this in the Randomer Question Thread a couple of times but no replies.

A) What is the cap on Spell Interruption Rate % down?

B) Are there separate caps that get added together (similar to Haste)? For example, maybe a cap on what you can get from gear, and then Aquaveil and merits get added on top of that? Or is it just a grand total cap?

Thanks!

[RyaWHM]

I have played around with chigoes using -100% and casting Utsusemi: Ichi as WHM/NIN.

(2x25%wands, Nashyhat, Willtorque, Druidbelt, AF+1boots)

I had three of them on me hitting super-fast like they do, and fired every spell, every time. And for Utsu, my skill is like 20 or something awful like that. So being hit like ~15 times while casting Utsusemi ... and NOT getting interrupted ... and repeating multiple times ... convinced me that either the cap is really high, or there is no cap!

I coulda sworn I took pictures, but I can't find them.

Is there anything else I could test for you, that you've wondered about?

No promises on how quickly I would get to it, but I'm definitely willing!

[Chuyu]

I have played around with chigoes using -100% and casting Utsusemi: Ichi as WHM/NIN.

(2x25%wands, Nashyhat, Willtorque, Druidbelt, AF+1boots)

I had three of them on me hitting super-fast like they do, and fired every spell, every time. And for Utsu, my skill is like 20 or something awful like that. So being hit like ~15 times while casting Utsusemi ... and NOT getting interrupted ... and repeating multiple times ... convinced me that either the cap is really high, or there is no cap!

I coulda sworn I took pictures, but I can't find them.

Is there anything else I could test for you, that you've wondered about?

No promises on how quickly I would get to it, but I'm definitely willing!

What did the chigoes /check to you?

[RyaWHM]

Preeeeetty sure EP. Might have been DC, but not likely. They were the three in the tunnel kinda northwest-ish of that main Mire Meripo lake area.

So whatever that would be, high 50's or low 60's, they did interrupt very easily after just taking off a piece or two, out of that set.

[Nevex]

Interesting.
Always been curious to know if Aquaveil has a static spell interrupt-% or if it varies according skill and this method looks like a solid way to test it.

Either way, this should make often overlooked gear pieces much more attractive when blink-tanking, knowing that there apparently is no cap to spell interrupt rate-.

[cdgreg]

Interesting, I always imagined it capped at 50% like physical dmg down

[Kaylia]

If you get 12%(8%?) spell interupt merit, does it add up to the base ~5% for a total of 17%? Less interupt on ichi could save my ass pretty often, and I'm not even including all those time sleep got interupted on mage job.

[Arthars]

does this mean you can run and cast with 100%? +_+

[Chuyu]

does this mean you can run and cast with 100%? +_+

Would be so broken v_v

[Arthars]

well mobs can do that!

[RyaWHM]

I was gonna mention that I actually tried, but I was embarrassed that I thought there was a chance in the first place.

(so no, it didn't work...)

[Gergall]

Hey Rya, thanks for the information. This is quite a surprise!

Even if there is no low cap at 50% or anything like that, I would definitely expect a hard cap at 95%. Everything from melee accuracy to crafting success seems to have a final unbreakable cap at 95%.

Would you be able to test on a higher level mob? The monsters level and/or the damage taken per hit are believed to play a role in spell interruption rate.

[Kaylia]

Hey Rya, thanks for the information. This is quite a surprise!

Even if there is no low cap at 50% or anything like that, I would definitely expect a hard cap at 95%. Everything from melee accuracy to crafting success seems to have a final unbreakable cap at 95%.

Would you be able to test on a higher level mob? The monsters level and/or the damage taken per hit are believed to play a role in spell interruption rate.

Yeah. Getting hit by critical (or high dmg) seem to increase the chance of getting interupted. It's possible it bring you back to a level under 100% spell interupt when you fight stronger monsters.


I agree 95-96% chance is probably the cap considering there is the 5% minimum cap.

[dejet]

~_~ lol tanking builds for 100% ino rate and no longer haste!?

[Ultimagi]

Iron Will gives Spell Interruption Rate -95% with maximum merits. I think that would probably be the cap.

[Gergall]

If a RDM/NIN can tank something, could a WHM/NIN with lots of -spell interrupt tank it better?

Someone please remind me what the RDM can do that the WHM can't.

[Ultimagi]

Hold hate.

[Araelus]

I was gonna mention that I actually tried, but I was embarrassed that I thought there was a chance in the first place.

(so no, it didn't work...)

I had hoped this would work a while back, and I too found that, unfortunately, Spell Interrupt -% doesn't affect the running interruption.

[dejet]

If a RDM/NIN can tank something, could a WHM/NIN with lots of -spell interrupt tank it better?

Someone please remind me what the RDM can do that the WHM can't.

whm dont have as many *hate* moves. however with the new mytic it seems a whm/nin tank with that can tank better then anything else(or as good)

[Ultimagi]

A level 1 Black Mage with Manafont could've told you that.

[Araelus]

A level 1 Black Mage with Manafont could've told you that.

Fair enough, but

[Argettio]

Someone please remind me what the RDM can do that the WHM can't.

The 3 big ones
Cap the recast timers for both Utsusemi spells. (-50% recast)
Cap the recast timer for Stoneskin, while maintaining 350HP (-50% recast)
Spam high hate spells (dispel, sleep, blind, poison)

Also
29-32 Phalanx build
2 MP/tic refresh from gear
Equip more enmity gear

The main reason RDM can tank is the fastcast... as we all know a WHM could get hate but it would struggle to keep shadows/stoneskin up

[Kaeko]

Do you know when the spell interrupt gear has to be equipped in order to get the effect? Fast Cast bonuses only have to be on the instant the cast begins to work, recasts only have to be on the instant the spell ends.

What about interrupt gear? Would be an amazing addition to 'precast' settings on Spellcast if all you need to get the benefits is to equip it at the start of the cast...

[Starr]

It doesn't cap that's for sure

[Ashokan]

Do you know when the spell interrupt gear has to be equipped in order to get the effect? Fast Cast bonuses only have to be on the instant the cast begins to work, recasts only have to be on the instant the spell ends.

What about interrupt gear? Would be an amazing addition to 'precast' settings on Spellcast if all you need to get the benefits is to equip it at the start of the cast...

I have always wondered this question.

[Ultimagi]

Pure speculation, but I would guess you'd have to be wearing the equipment when you take the damage, since the amount of damage has an impact on whether or not the spell gets interrupted.

[RyaWHM]

Okay, trying it out on a Tough, I figured I might die, so I wanted something that hits fast but not too hard, and where it's easy to die/RR safely.

Lv.77 Qiqirn Goldsmith @ Nyzul Staging Point

(same -100% setup from before)

The best and clearest were when he hit me 3+ times and pretty clearly all within "actual" casting (not too close to the start/finish of the spell). In those [got-hit-three-times] cases, I was able to cast the following spells at least five different times:

Stoneskin
Blink
Reraise III
Regen III


Next, the spells where I took a critical hit while casting, on at least five different occasions:

Repose
Blink
Stoneskin
Reraise III
Regen III
Utsusemi: Ichi


Lastly, the ones where I didn't get lucky enough for three hits, or I did see three but they were too close to the start/finish to be sure. Listing TWO-hit casts without interruption:

Utsusemi: Ichi
Repose


Note#1: The times I counted as three-hits did not include a Double/Triple-Attack. There was one instance of Utsusemi: Ichi getting three hits because of this.

Note#2: In casting over 100 spells and only noting two spell casts (both repose) where he DIDN'T hit me at least once, I was not interrupted a single time due to the mob hitting me!



EDIT: Thanks! Yes, sorry, I meant to say double/triple -- in my head "double-attack" meant either multi-hit trait, because I'm weird. Either way, I tried to just ignore those -- so whether it was double or triple doesn't really matter.

side-question: are they THF/WAR though? I coulda sworn I saw double-attacks.

[Ultimagi]

Qiqirn Goldsmiths are Thieves, they use Triple Attack not Double Attack.

[RyaWHM]

Quick test of mid-cast swapping:

Lv.79-82? Yagudo Eradicator @ Meriphataud Mountains [S] (didn't kill, so not sure exactly what level, but he was VT)

I just used Reraise III as my test spell, since it's easier to see/prove an interrupt, than a non-interrupt, you know what I mean?

In casting it five times, each time I would start in -100%, start casting, then give a short pause before hitting my unequip-all-interrupt-stuff macro (..then he hit me...then the spell fired).

1/5 times, the spell fired
4/5 times, the spell was interrupted

Just from this brief test, it seemed pretty clear that you need to keep it on. I would bet it's checked at the moment he hits you, like shield skill for example..


I also tried some more random spell casting (incl. Utsu:Ichi) in full -100%, and was not interrupted at all. Still, it would be nice to know a few things:
-does damage amount matter?
-do double/triple attacks count as multiple chances to interrupt?
-do dual-wield attacks count as multiple chances to interrupt?
-how much aquaveil helps (though I used its casting to test, I clicked it off each time; I was not really testing that spell here)
-more?

[Gergall]

Wow, it sounds like 100% really and truly means 100%, not some hard cap at 95 as I expected.

Questions:
Since characters with no merits or interruption gear still have a base chance to not be interrupted (believed to be 5%), does that mean that with only 95% spell interrupt gear, you would still never get interrupted?
PLD with 5/5 Iron Will should also be able to answer this. Does the 95% from Iron Will stack with the 5% base for a total of 100%?

Does Aquaveil scale based on enhancing skill? Difficult for just one person to test because if you do level cap events for testing, you restrict your gear options. It's easier if you find another mage with much lower/higher enhancing skill than you and compare results.