Harvest bosses

Got my first harvest boss fight with Namhamir today. It took me ~10-15 minutes to kill him and all these spawned rares. In a t16 map with 40% extra life for monsters etc.

No problem to survive when moving but I'm unable to deliver enough damage to the boss. I have around -87% lightning resistance for the boss but this is not enough. Is everything balaced around having two active curses?

Are all harvest boss fights now so time consuming?

Sounds like there's a problem with your own damage.
Harvest boss fights are unchanged and don't take any longer to fight compared to the he previous leagues.

That's just a build issue.

More often it's the opposite of your problem that bugs them. Too much damage (specially the yellow boss), might cause him to spam his obnoxious attacks over and over without going into adds phase.

Your build looks like it focuses on nothing but defense. No offensive auras, very little offensive gear and you took the more defensive ascendancy points.

And your passive tree is a little yikes.

My flameblast totems kill them in 10 seconds including the spawn phase, and I have the 100% more life sextant. Might be a damage problem from your end.