Atlas map bosses life regeneration need to be reduced

Some unique enemies can't be killed. I'm talking here about map bosses that have a regeneration ability such as Wasteland map (t13) and Fungal Chasms map (t14). According to the playstyle of some classes you play, they are invincible. I could spend 10 minutes there, a day or a week, the result would be the same. The map can't therefore be considered completed. Their regeneration abilities are too powerful. When I see a boss that regenerate several percent of life per second, I rather expect an uber boss. However, it isn't the case.

Is it logic and normal that these maps are far more difficult than t16, guardian or conqueror maps?

Their regeneration abilities are too powerful. A rebalancing of the difficulty seems necessary. Currently, this doesn't make sense at all.

Frost Bomb

https://www.poewiki.net/wiki/Frost_Bomb

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75% reduced Life Regeneration rate
75% reduced Energy Shield Regeneration rate

alternatively, unhide your characters and ask for some help. im sure there are improvements your build can make, in order to beat some random t14 boss that has regen.

Yeah, I feel like some mechanics need more ways to interact.

If an enemy has lots of regen, you should be able to switch a anti regen gem into gear, to kill that enemy, potentially with a bit weaker effect on map bosses.

Frost bomb works, but I think every color should have 1 gem that reduces either life or energy shield regen, or both.

Frost bomb for my taste is too static and bound to a location, sure the debuff stays for 5 seconds, but that doesn't really help if you have to dodge attacks, spells or degen areas.

Also it feels out of role play to have to cast it as a melee character or range attack character with 0 blue gems.

But the same should be done for the trickster characters.

The counterplay shouldn't be having enough dps, or just being super fast all the time.

You should be able to socket 1-2 gems into your normal build if you want to kill that rare and not randomly chase some monster with hope of killing it in the next 10 minutes. Especially if it's not guranteed to drop anything.