I'll try refreshing isboxer, although, for season 5, I actually did just that because my seasons 2-4 setups were all over the place as I was doing a lot of things with keymaps and round robins, and I wanted to start clean this season since so far, my demon hunters have not had any need for that stuff.

As for the character itself, I do Estoreic Gem already on all 4 demon hunters, and they all use approx the same gear, with same reroll goals, and even when I look at the stats, I can't spot anything serously lacking. The character slot that is dying is lacking some +vit compared, but actually has more armor, resistance, and life on hit than both my other guys but he always gets hit first (not one shot), and is first to die, while the others tend to not get damaged at all.

When i run the same character solo to increase my shard count max, I don't have the same issues.

Maybe I'll post the profiles later and someone can take a peak and see what I am missing.

It just feels like some technical thing, and not... a gear thing.