Can't find abyss leading to a boss

I'm already lvl 95, running ONLY t15 maps with 3 abyss precursor tablets (100+ maps so far) and still find 0 abyss with boss. Still can't get my 2 abyss atlas points. Killed Kulemak already, now have 6/8 points.

Whats wrong with it?
How can I increase my chances to spawn abyss with boss?

Well, outside of specing into Abyssal Ire on the tree I'm not really sure what else there is to do.

Any affixes that can ruin it? Is "Abysses in your Maps have #% increased chance to lead to an Abyssal Depths" good or bad idea?
So stupid there is no deterministic way to get an ATLAS POINT.

bump

bump.. still 0 bosses found even with Abyssal Ire point

Same here, they just doesn't seem to spawn for me, not 100 maps yet, but everyone else i have asked keep getting them pretty commonly.

EDIT: i changed my tablets not to have increased chance to abyssal depths and literally got it next in next 3 maps. Was using abysses have inc monsters tablets 2x.