Insane Zombies Everywhere?

[mental jay]

So I forgot to reduce my pop after the zombie bug from 42.13
42.13.1 is just insane pop it feels.

I reduced pop back to normal settings and reloadedoptions but it just feels like there is 30000 zombies in every town we go..

Is anyone else seeing this?

[opaque forge]

We just started new server and theres tons of zombies everywhere. Last week there wasnt zombies like this, also they migrate like crazy

[lunar flax]

What zombie settings are you using exactly? Any changes from the default values?

[tiny musk]

Im using default, high, on dedicated. 40 day 1.5 peak. .75 start pop.

I can say there was a ton of Zs but I hoped it'd be like that. Me and another dude barely made it out of muld, partly because he didnt know when to run. I really enjoyed it and dont feel its broken lol.

As for the zombies moving a lot.... yeah noticed They were way more active than im used to which I also really loved. It kept us moving and scanning for a safe way to sneak by.

Honestly 10/10. The feeling of despair, im boned, only to make out by the skin of my teeth.

[mental jay]

Well this explains it

https://www.reddit.com/r/projectzomboid/comments/1pqkbqt/zombies_following_melee_kill_soundsmigrating_to/

[mental jay]

I had my pop set to high, it felt like we were playing a tower defense game with large hoards constantly coming from across town to our melee hits.
We were trying to clear ONE house.

This would make sense if any of us even had a gun, but after 3 hours I had to lower the settings below normal and wipe zpop

[tiny musk]

Oh ok, this lines up but I will say they were moving like crazy and we weren't fighting.

I also did fight a horde outside a house. They were migrating and coming into us, but some walked right by. There were a bunch that followed us we had to fight and then the horde was just too big and we were tired.

When I get on tonight ill go admin and see if I replicate this too, because im not sure I had the same experience.

[lunar flax]

I see, so it's not that the pop is high, but that they are following you, this is a known bug as far as I am aware

[tiny musk]

ah. you know. They did track and follow us through an entire forest. I was amazed. Good to know thats a bug haha. certainly kept things interesting.

[steel prairie]

Has anyone tried to mess with turning off zombie migration or rally group sizes in sandbox settings and found that fixed it? It was incredibly difficult to play on a server with friends last night because of this issue.

[willow river]

I found the probable cause of the error:
I was using G1GC in the server settings, but I needed ZGC.

after the change everything went back to normal.

[mental jay]

G1GC?

[willow river]

yeah "-XX:+UseG1GC",

[mental jay]

I have the vanilla script that was pushed via steamcmd....
do you have a link to the wiki that says what should be changed?

[steel prairie]

So now you’re using “-XX:+UseZGC” and the laser-guided zombies are fixed?

[lunar flax]

ZGC is already the default though, why would anyone switch to G1GC

[strange geode]

is there any chance you guys are using indifferent broccoli server host?

[steel prairie]

Nah I’m using gamehostbros and am still having this issue

[strange geode]

driving me bonkers!!!!!!!!!!

heres a server console log for anyone if that's helpful

[steel prairie]

Yeah getting just constantly swarmed even when crouching around makes it really difficult to get anything going

[topaz yarrow]

I did a completely fresh install, deleting everything in /steamapps/common/ProjectZomboid and everything in /users/username/Zomboid, and played for a few hours in a locally hosted multiplayer game by myself, and experienced zero issues with weirdly migrating/wandering zombies.

However, as soon as I had friends join me, the problem reappeared. They are now fully reinstalling the game to see if that fixes it.

[strange geode]

i don't want to speak too soon. but doing what mixu suggested seemed to have fixed the problem. i dont know how or why, but it did. i've been playing multiplayer for 3 hours now and the issue has not reproduced

normally the issue always comes back within 20 mins of a restart, its been hours. maybe just good luck or maybe that really did fix it

[strange geode]

ProjectZomboid32.json was set to G1GC for me by default, if it matters

[topaz yarrow]

how are you hosting?

[strange geode]

indifferent broccoli

[topaz yarrow]

Do you know if there's a way to change this without running a dedicated server?

[steel prairie]

just tried this. let's hope it works

[strange geode]

i honestly have no clue 🙁

[strange geode]

lemme know if it works out for you

[strange geode]

MAYBE \steamapps\common\ProjectZomboid? im not sure if its the same

[lunar flax]

It does not, since you should never use that file in the first place, as its the 32 bit version of the server. All servers use the 64 bit version.

[strange geode]

interesting, because the problem went away for me. Weird luck guess! Lmao

[cinder mango]

Anyone else have luck trying that whole G1GC thing change? Can see it shouldn't work but someone confirming it did, which is more than usual when looking around for a solution for this issue.

[topaz yarrow]

I did a find and replace all "G1GC" with "ZGC" in my game files (excluding compiled java) and it did not help. I think we just have to wait for a patch

The only other thing I can think to try is replacing the jre64 and projectzomboid.jar files with ones from someone who claims they don't have the problem

[mental jay]

I'm thinking the G1GC vs ZGC was just a placebo effect for them.
After I reduced the pop some and change their hearing mine have been manageable.

[cinder mango]

Yeah it doesn’t work the dev that posted was correct the server uses the correct one by default as it uses the x64 folder setting so this has no effect.