Found 2 bugs.

Small one:
monsters checkbox not being saved after restart in singleplayer.

And major bug:
looks like sometimes multiplied npcs being multiplied, for example if I move not very far away from npc's camp and come back, those who was spawned with mod, being multiplied again. (maybe I messed up settings, I set min and max to "1")

My mod settings: https://i.imgur.com/XxLWWGV.png

Thank you for info

Forgotten checkbox fixed.

Majorbug was a bit complicated but I think now it's working properly.
Duplicate npcs are now removed just like their originals as soon as the player gets far enough away.
(it takes a few seconds, maybe it's fast enough for normal playing, (not teleporting here and there :D ))

Just tested this on a new game with no other mods. When getting near normally non-hostile NPCs that are cloned they will become hostile. Noticed originally in Sepermeru all the cloned NPCs become hostile, which causes the other NPCs in the area to become hostile as well. I noticed that all the cloned NPCs have concussive damage applied to them about 75% of the bar is goine, which I believe may be related. I also looked approached some prey animals that are not normally hostile, such as the green kappas, and they are not hostile but when I target them they do also have concussive damage on them, well they have the white bar above their heads but when I attempt to knock them out it resets.

thanks for the info. I'll look into it after the holidays

Here is some bug reports:

1. Bug that I was reported above about multiplying seem still present but its not happens every time, it happens about 1 out of 3 times for me. (maybe I reproducing it wrongly)
here is example: NPC camp that contains 2 npc by default and 4 npc's with mod enabled. I clear it and leave for some time, then I come back again and there is a chance that there will be 8 or more instead of 4 npc's.
image: https://i.imgur.com/1ubJO1G.png

2. May be also related to bug that I was reporting previously.
Monsters checkbox is now saved but without enabling it warriors, crafters, dancers (i.e thralls) not multiplyed at all. I would be fine with enabled monsters but wildlife like rabbits is counted as monsters and multiplied, land become too much overpopulated.

MALICIOUS
"non-hostile NPCs will become hostile" and "concussive damage" was fixed

Vesper
changed the way to remove duplicate npc.
perhaps it works correctly.

"Monsters checkbox must be for thrall"
I am not able to reproduce this. each checkbox works on specific types of npc.

"rabbits is counted as monster"
all passive (running away) animal is counted as prey (including rabbit)
Monster is wildlife with the ability to attack (even only in defense)

-I only test it in singleplayer-

Thank you guys for all the bug reports.

sometimes multiplied enemies are immortal and animals attack each other.

i think you should add a seperate multiplier for bosses.

Boss have separate checkbox.
separate values are planned for all in the future.

Immortality is caused when more than one npc is in exactly the same place.
I will solve it with a small shift of duplicates.

What animal attacks others? same kind?

i've seen salamander and i think sand reapers, but I'm not 100% sure about the last one and yes they attack their own kind.

and how about an option to disable it for purges, surges, maelstrom and pool summoning?

the mod doesn't work inside of siptah sigil dungeons.

RE: Spawn HP bug - yes I've been seeing that issue too, where bugged mobs spawn with like 165k hp or some crazy amounts. I've discovered however if you "heal" the mobs with a spell like from AoC or EEWA mods, it will reset the bugged enemies to their HP to the correct values at 100% instead of 10000%. So any bugged enemies, i try and kite away from the main groups to "heal" them back to normal.

HP bug: I don't know exactly what causes it.
Personally, it didn't happen to me, I'm probably just lucky / unlucky.
Do you remember specifically which npc were affected?

Purge Mealstorm Npc:
The way I identify npc for duplication does not provide the ability to distinguish whether they come from purge or maelstorm.
Still, I'll try to think of a solution.

HP bug happens on any type of enemy spawned during a purge or if using the PVE Ambush mod, it must be with something how these enemies are spawned during the live game. All other bosses and mobs that are spawned on map load seem unaffected by this odd bug.

However it does not happen to all the spawns, maybe like 3 of 10 of them at random (0% - 30%), I did once see some IoS monsters all spawn with 10000% hp and i ran far away lol. I've only witnessed this on SOLO/singleplayer, have not tried with coop/MP or dedicated.

It is definitely this mod that is causing the extra HP issue, but I find it OK and a bit more of a challenge during these situations and with the healing workaround, atleast i can fight them.

Quick question, do you still run into a bug after today's update of mod ??

Yes, im still getting mobs spawning with 10000% hp in the 2.5 update, but from what i can tell its less frequent that it happens.

I spent two hours killing hundreds of monsters in the Maelstrom. I haven't met any of the hp bugs. :/
can you make some screnshot situation and write me your modlist?