For those who's games wont start & had the same confusion as me at first.

BACKUP THE FILES!!!

1. Go onto the youtube link and download the "BUILD 41 FIX" link in the description.
2. Follow the instructions on the "instruction.txt" file

then it should start

Where are the youtube video links

for those of you claiming it doesn't work. run the game from the 64bit bin file.

@найт, это работало до предыдущего апдейта
не стоит агриться на мод который с 7 апреля не обновлялся
чего ты ожидал?

Any update for B42.11.0? Thanks

same, game wont start now, good think i still have the original files

Хорошо что всегда создаю копии оригинальных файлов игр. Потому что непонятно как автор этого мода тестировал на своей игре корявый мод который попросту не даёт игре запустится. Бесполезный мод убивающий игру.

my game wont start now

If your on B41 dont waste your time on this. The mod dont work in any way shape or form. The link from the youtube dont work. all the tricks in the comments dont work. Its a totally useless waste of time. Probably only works for the B42 people.

Changing -XX:+UseG1GC and -XX:+UseZGC to -XX:+UseParallelGC didn't start the game. It's unclear if B41 Solo Fix and B41 Server Fix can be installed together.
Замена -XX:+UseG1GC и -XX:+UseZGC на -XX:+UseParallelGC не привела к запуску игры. Неясно, можно ли установить B41 Solo Fix и B41 Server Fix одновременно.

Copying a multi-CPU server fix for b41 into the game folder prevents PZ from starting. Help needed.
Копирование исправления для cервера b41 в папку с игрой приводит к тому, что PZ не запускается. Требуется помощь.

@angel open the youtube video link and look in description, there is a fix

anyone know how to get the b41 dedicated server version working? i tried applying the fixes below to no avail

figured i should update while this mod didnt slow my stuff down it actually helped, and by that i mean whatever file is posted about 2 or 3 pages ago someone made a post to build 42 files and THAT helped, idk if this mod did anything bc when i first tried it it wouldnt open

Btw, my current pc spec is Ryzen 3 Pro 3200g + 2x8gb 3200mhz (but it only shows on task manager at 16.9gb and at 2933mhz) currently don't have a dedicated gpu as well. Hope this help fix the issues i currently having.

I followed the all the steps including the b41fix in yt, and the game is still not launching. Need help for this please.

CREDITS TO @Captain Pixelbeard for making this work.

Couldn't open the game ether. Clicked "Launch Game," but nothing happened, and there wasn't any crash report. I had to start the game through the .bat file. I got it fixed by changing the -XX:+UseG1GC and -XX:+UseZGC parameters in the ProjectZomboid64.json file to -XX:+UseParallelGC,

Below you find the already chaned part of text of my ProjectZomboid64.json file. Just override THE PART in your own json file. I used Notepad+. I hope, it helps.


- ProjectZomboid64.json -

[...]

],
"windows": {
"6.1": {
"vmArgs": [
"-XX:+UseParallelGC",
"-XX:G1NewSizePercent=20",
"-XX:G1ReservePercent=20",
"-XX:MaxGCPauseMillis=50",
"-XX:G1HeapRegionSize=32m"
]
},
"10.0.17134": {
"vmArgs": [
"-XX:+UseParallelGC",
"-XX:ZCollectionInterval=120",
"-XX:+UnlockExperimentalVMOptions",
"-XX:LargePageSizeInBytes=2m"
]
}
}
}

Used @ivmakk's linked copy/paste and absolutely worked like a charm. Thanks!

Great fix!

@4vr.yung -- in its current form using the .json and .bat provided with this mod will cause the game to not launch. Go back in the comments and find @Captain Pixelbeard's August 9th comment for instructions on how to fix the issue.

now it is not working 42.11.0
(guys below, are u checked working after game updated?)
starting only if run bat (but this is not the solution cause nvidia settings and e.t.c. do not working)

this is absolutely a game changer. Thanks man.
@ivmakk for you too!

I have 4 core CPU and 8GB RAM, is someone have a code for ProjectZomboid64.bat and ProjectZomboid64.json for this specs?

im thinking this mod is possibly causing actions to take the entire day? i cant confirm yet though will update

I got it to load and play by running the direct batch file

@ivmakk it is still not loading for me

@ivmakk this is some god level shit! Thanks

@ivmakk you are a saint, ty

@ivmakk you're a legend dude

Just for anyone looking for working B42.11 versions of ProjectZomboid64.bat and ProjectZomboid64.json - here are full ready-to-copy/paste snippets: https://gist.github.com/ivmakk/b6026a539c620e5580e32f1179fe12a2

For me, this dramatically improved FPS at my base (from ~35 to 100+) and removed those annoying micro-freezes.

Disclaimer: I only applied the change mentioned by @Aldunhokoron and did minimal formatting of the initial .bat file from the mod description and the .json file from the mod itself.

Build 42.11, Windows 11. After installing the mod, the game did not start, but after making changes to ProjectZomboid64.json, changing two lines -XX:+UseG1GC and -XX:+UseZGC to -XX:+UseParallelGC. The game started, but the saves stopped loading, and it is impossible to start a new game, at the end of the download, it just spills onto the desktop

I'm on Windows 10 and played for a couple of hours. Now I can tell when the game overwrites the files because it gets way slower. I can confirm it's working. b42.11.0

I tried the changes @Aldunhokorn mentioned that were originally posted by @Dotan but my game still wouldnt launch. Anyone know a fix for this?

you might want to replace the usage of wmic with something else, because wmic is deprecated and isn't included in windows 11 24H2

changed the values and still won't launch

@Aldunhokoron thank you !

I'm gonna put the comment from @Dotan here for convenience.

If you change the values -XX:+UseG1GC and -XX:+UseZGC in the ProjectZomboid64.json file to -XX:+UseParallelGC, the game will run.

isn't starting, can't figure out why. did everything to a T

Just tested it on b42.11.0. It seems to improve the FPS.

Is the information for this mod still being updated with new releases of build 42 OR do we need to scan the comments below for correct configurations ?

Sweet mod, after using it on insane zombie pop I can now drive down the highway at 120mph very little lag and as it quickly loads new chunks "drift" without hitting trees due to lag. thanks for saving my potato pc lol.

Thanks @Dotan your method also worked for me.

@Captain Pixelbeard, thx bro. Fixed.

Crashing... The game won't even open. When I click “play,” it closes immediately as it starts up.

doesnt work

do you plan to update for 42.11? it's just crashing on launch on that version

改完这个我体感上觉得的low帧至少提升十多帧，开车时和拉最大视野的时候帧数也稳定了好多，简直就是僵毁必装神器，感谢外国友人的性能优化，大佬一生108胎

thanks you so much for deeply increase my potato PC performance ,i got at least 10 fps increase from your god mod,love you form hk

how do i do this on mac?

If you are having trouble making this work, just open YouTube video linked to this Workshop item and download files in the description, then follow the instruction in the zip file. The mod uploaded to the Workshop is missing some files.
如果你按照教程这个mod还是用不了，到上面链接的YouTube视频简介里下载文件，然后按照zip压缩包里的教程安装。工坊里上传的文件缺东西

BUILD 42.7.0 FIX:
{LINK REMOVED}https://www.mediafire.com/file/7c095n9brvbry0q/FixedProjectZomboid64by4Zeta.rar.rar/file

BUILD 41 FIX:
{LINK REMOVED}https://www.mediafire.com/file/n5n8zesolypk71q/b41Fix_By_4zeta.rar/file

SERVER BUILD 41:
{LINK REMOVED}https://www.mediafire.com/file/mjf0gmsk32xx04w/Zomboid_Multi-Cpu_Server_Build41_by_4Zeta.rar/file

you have tutorial or instruction i can follow.. for this to work? please help Anyone??!

- ProjectZomboid64.json -

"vmArgs": [
"-Djava.awt.headless=true",
"-Xmx20480m",
"-Xms9192m",
"-Dguava.library.path=.",
"-XX:+UseParallelGC",
"-XX:ParallelGCThreads=32",
"-XX:ConcGCThreads=12",
"-XX:+UseNUMA",