Looking for advice for poison srs necro

Like in the title, looking for advice how can I improve DPS of my poison srs necro.
It simply feels low, and I have no clue how to push it further. Any advice will be deeply appreciated.

PoB link: https://pobb.in/0sDD3sOawVPT

My AG is running Kingmaker, garb of the ephemeral, additional curse gloves with enfeeble implicit and leer cast.
Spectres I'm using are: Perfect Forest Warrior, Perfect Hulking Miscreation and Perfect Warlord.

No clue about your build nor trade league but quick look:

1) Minmax better to get rid of the Amethyst and use Bismuth instead. Shift resists on gear to chaos from ele. That allows you to use a second Bone Ring.

2) If your DPS issue is for single target then: Didnt find Temporal Chains on build.

3) Passive seems to have inefficient routing for 'Sanctuary'. You can replace 10 str with 6% life.

4) You dont seem to use Tattoos, they can be useful for minmaxing.

5) Didnt find blind-on-hit for minions. This may be cost efficient for single target.

6) There is probably some big thing/s you can improve that Im completely unaware of. Hope for a more competent answer.