Breach closes way too quickly

ED/contagion lich.

Breaches (currently on t5 maps) close in about 15 seconds. About 5-10 seconds in is when enough monsters spawn for my dots to start proliferating effectively. By then it’s too late - not enough mobs are dying to extend the timer. I’m not having an issue killing the mobs once they spawn.

Delirium lasts for ages now, but breach is gone like a fart in the wind :(

Skill issue

The monster density in Beaches at T15 seems quite a bit off as well.

ive found that density varies a lot. lots at the start and then the density trickles off to almost nothing. Most breaches ive done last for 10 seconds or less and i clear very fast.