For example: Perfect implicit eternal gauntlets (24%) with with T7 Experimental Armor applies to Damage over Time (30%), perfect Champion Regalia (17%), and 100 attunement with Iron Attunement at 5/5 (50%) would get you 121% of armour mitigation applied against damage over time.
Does that cap out at 100%, or would tht cause armour to be more effective against DoTs than hits? Character sheet and game guide a lot tell me nothing on this front, and it’s not really clear.
Check the tooltip in game on your character stats screen. It tells you the cap there under the defense tab I believe.
It does not.
That is the cap on normal armour mitigation.
I am asking about the cap on how much of your armour mitigation applies to DoT.
No cap as far as I know. U can get 100% but what for? 
I suppose the armor-dot mitigation cannot go above your own armor mitigation.
It should be capped by that.
Thats for sure.
Yeah, I’m just looking for somebody who knows how it’s coded (via datamine or dev knowledge) to confirm that. The stat phrasing is unclear, it was next to impossible to go over 100% last season, unlike now. It probably shouldn’t go above 100%, but I’m only looking for mechanical confirmation whether it does, which nobody seems to know at all.
Have you tried the “Ask the Devs” channel on their Discord?
They usually respond about this kinds of mechanical nuances there.
Profane Veil on Warlock has 100% during its duration its very easy to test with that I would assume.
Just look for a mob that deals consitent DoT.
use 2 equip loadouts one with tons more %armor to DoT and one without and use both with Profane Veil.
If the numbers don’t change 100% is capped.
Oh, that’s really clever, actually!
…Unfortunately, my easy access is mostly based in the Sentinel mastery trees (and I don’t have an acolyte).
I also don’t know what mobs deal consistent DoTs aside from standing in Aberroth puddles – the game is very unclear what is a DoT outside of debuffs, which I have too much health regen to track the damage of.
Ah, I’ll give that a try, thanks. I’m way out of touch with the discord-server-for-everything meta haha
There are dozens of mobs, just off the top of my head:
Lagon (you can use story version), any mob possessed by the Witch (green laser), Covenant of Dominion, Poison and Sand Twisters from both Gorogn Versions… the list goes on.
Maybe this can help testing? Bleeding Heart - Unique Jade Amulet
Also, I knew there was a thread discussing exactly this, and I did manage to find it… It’s still open, and OP got some findings he shared there. I didn’t bother to recap on everything I missed since I last read it, but you should give it a look.
According to OP on that thread, armor-dot-mitigation is indeed capped.
And we mustn’t forget Julra with her void puddles. 
Very quick to get to her with the new charms.
I asked a dev on discord as well – it does indeed cap at 100%. Otherwise it would be possible to stack enough to become fully immune to all DoTs, which would be pretty funny (especially since a lot of slam-looking stuff is just AoE Hyper DoTs).
Still, good to know, and thanks for pointing me that way, alongsid the useful info. Good find on the old thread!