Damage over time from nowhere driving me crazy

Hello everyone,

I need your help because I can't figure out why i'm dying and it's driving me crazy.

On certain map (I always run jungle valley t16 with strongboxes strategies) my life is going down like I have damage over time. However nothing display at the top beneath my auras ? Nothing is uncheck in my UI (and I didn't find anything about it) and I clearly see when I'm ignited so what is it ? I don't know.

It doesn't happen on all my Jungle Valley map. I'm not sure but I feel like it's when i Have : "player have -XX resitances".
It always happen when I open strongboxes (on EVERY strongboxes). And I had check (and you can see in the video), most of the times 0 monsters hit me.
There is no reflection on the map (as I show you on the video) because I filter them, plus it's my summon that dps, so reflection of any kind is not affecting me.
I have all my resistances to 76%, and chaos to 6%

I am running a lvl 94 necrommancer carrion golem.

Here is the proof with a video on youtube : https://youtu.be/YkwlCB6ondA

Map affixes :
AREA CONTAINS 19 ADDITIONAL
STRONGBOXES 37% INCREASED NUMBER OF RARE MONSTERS
PLAYERS HAVE -18% TO ALL MAXIMUM RESISTANCES
85% MORE MONSTER LIFE MONSTERS DEAL 184% EXTRA PHYSICAL DAMAGE AS COLD
MONSTERS SKILLS CHAIN 3 ADDITIONAL TIMES MONSTERS TAKE 66% REDUCED EXTRA DAMAGE FROM CRITICAL STRIKES MONSTERS HINDER ON HIT WITH SPELLS
PLAYERS HAVE 55% LESS ARMOUR
PLAYERS HAVE 74% REDUCED CHANCE TO BLOCK 300% INCREASED QUANTITY OF ITEMS FOUND IN THIS AREA 226% INCREASED RARITY OF ITEMS FOUND IN THIS AREA 76% INCREASED PACK SIZE STRONGBOXES HAVE A 31% CHANCE TO BE 0 PENABLE AGAIN STRONGBOXES ARE MORE LIKELY TO BE RARER VARIETIES

My stats on POB :
Active Minion Limit: 10 Cast Rate: 1.76
Mana Cost: 103
Mana Cost per second: 181.76
Life Cost: 103
Life Cost per second: 181.76
Strength: 214
Dexterity: 143
Intelligence: 243
Effective Hit Pool: 139,994
Phys Max Hit: 8,652
Fire Max Hit: 18,798
Cold Max Hit: 28,197
Lightning Max Hit: 18,798
Chaos Max Hit: 5,725
Total Life: 4,176
%Inc Life from Tree: 112%
Life Regen: 328.3
Total Mana: 919
%Inc Mana from Tree: 25%
Unreserved Mana: 32
Unreserved Mana: 3%
Mana Regen: 33.0
Energy Shield: 1,386
%Inc ES from Tree: 43%
Evasion rating: 3,077
Evade Chance: 21%

Pantheon : Soul of Lunaris + Soul of Abberath

Auras : Determination + Tempest Shield + Arctic Armour + Skitterbots

If you have ANY idea, or any option that I could test to see if it fixes the problem i'd love too. it's hard for me to replicate the issue as it happen on 1 map over 10 (something like that) but I would keep your inform.

Its the Covenant chestpiece plus automating spells such as convocation and molten shell.

Will happen in your hideout as well, has nothing to do with mapmods and works as intended.

Think the above response, might have something do with chest as well. Why isn't it applying all the time though, and why does it look like damage over time and not incremental skill cost when those spells have a cooldown? There is trigger mechanics on the weapon, but no skills are being used in the video that I can see while moussing over the health globe. (Edit: Not this, was referring to Orbaal post while typing, but seaman answer seems to make sense, especially since you are not capped against chaos damage.)

What is that big purple circle around you, is that MTX for auras, or is a player mod from eldritch alter?

(Edit: There you go, flask must be proccing it)

No it doesn't happen in my hideout. At first I thought it was the lifetap support but it's not as when I cast spell wherever, it doesn't kill me. My regen is enough. Or my lifetap is not enough.

Oh my god, however it's probably the exarch mod. It's the first time I try exarch over the eater. I'll check next time I play !