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Setting up the modpack.md

Setting up modpacks

Below are the best practices for setting up an Enigmatica modpack instance.

Please do not ask for help in the comments, go the the support channel on our Discord.

TL;DR

Follow the below steps to use recommended settings.

  • Open the CurseForge App

  • Click the cog icon in the lower left corner

  • Go to the Minecraft tab

  • Scroll down to the Java Settings section.

  • Use the Allocated Memory slider to assign the recommended amount of RAM for your PC

  • Paste the below arguments into the Additional Arguments textbox

    -version:1.8+ -XX:+UseG1GC -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M

  • Done!

RAM

All Minecraft modpacks require you to allocate a certain amount of RAM for them to work properly. The amount depends on the modpack.

Setting RAM allocation with the CurseForge App
  • Open the CurseForge App
  • Click the cog icon in the lower left corner
  • Go to the Minecraft tab
  • Scroll down to the Java Settings section.
  • Use the Allocated Memory slider to assign RAM.
  • Done!
Recommended allocation amount

Never allocate more than your PC can spare.

Total RAM (in GB) Maximum RAM allocation (in GB)
4 3
8 6.5
12 8
16 8

Assigning more than 8GB is never recommend, as you may actually get worse performance. If you're using shaders or a high resolution resource pack, the maximum is 10GB.

Modpack Recommended RAM
Enigmatica 2 7
Enigmatica 2: Light 5
Enigmatica 2: Expert 6.5
Enigmatica 2: Expert Skyblock 6
Enigmatica 4 4
Enigmatica 5 6
Enigmatica 6 5

Java

CurseForge defaults to using an old version that comes with Minecraft, so you have to set the version yourself.

Downloading latest Java

The version you should use is the latest Java 8 64-bit, which you can find here:

https://java.com/en/download/manual.jsp

The one you need is Windows Offline (64-bit)

Set CurseForge to use most recent Java 8
  • Open the CurseForge App
  • Click the cog icon in the lower left corner
  • Go to the Minecraft tab
  • Scroll down to the Java Settings section.
  • In the Additional Arguments textbox, input -version:1.8+
  • Done!

Java Arguments

For optimal performance, we recommend that you use these Java arguments:

-version:1.8+ -XX:+UseG1GC -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M

In order to set Java arguments using CurseForge, follow these steps:

  • Open the CurseForge App
  • Click the cog icon in the lower left corner
  • Go to the Minecraft tab
  • Scroll down to the Java Settings section.
  • Put the arguments in the "Additional Arguments textbox"
  • Done!
@usafphoenix
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can you explain the java argument suggestions?

@NielsPilgaard
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@usafphoenix They're taken from this Reddit post, authored by Forge developer CPW: https://www.reddit.com/r/feedthebeast/comments/5jhuk9/modded_mc_and_memory_usage_a_history_with_a/

@NielsPilgaard
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@sergio0902 I doubt it to be honest, but it's worth a shot.

@trfoster
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Does it matter if you choose the JAR launcher instead of the native launcher.

@NielsPilgaard
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I recommend always using native.

@trfoster
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Also you said reinstalling the modpack might solve some issues. Would this delete any of the worlds ?

@NielsPilgaard
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Your worlds would remain in your old instance, yes, you would have to move the saves folder to the new install of the modpack.

@Blank517
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Forge gives an error 404 :c

[12:14:11 WARN]: Couldn't download http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.12.2-14.23.5.2847/forge-1.12.2-14.23.5.2847.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 404; URL=http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.12.2-14.23.5.2847/forge-1.12.2-14.23.5.2847.jar
	at com.mojang.launcher.updater.download.ChecksummedDownloadable.download(ChecksummedDownloadable.java:77) ~[sklauncher-fx.jar:3.0-1a97ead]
	at com.mojang.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:107) ~[sklauncher-fx.jar:3.0-1a97ead]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_242]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_242]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

@NielsPilgaard
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Either try again later, or use another launcher such as MultiMC or GDLauncher.

@Blank517
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If I install forge with the installer from their website it works 🤔
I don't know what is wrong with your profile file

@NielsPilgaard
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What is a profile file?
The issue isn't on my end, it's the Twitch launcher that isn't always able to get the required files.

@Blank517
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Sorry I mean version file "Enigmatica 2 Light.json", anyway I resolved my own issue ^^

@julesdebie
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When I start the game in the minecraft launcher it gives an error from Java Virtual Machine launcher: "Error: Unable to locate JRE meeting specification "1.8+"" and in the minecraft launcher itsef it says "An unexpected issue occured and the game has crashed. We're sorry for the inconvenience." any ideas on how to fix this? thanks in advance!

@julesdebie
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ow yeah also I reinstalled the modpack but havent redownloaded twitch bcs i just downloaded it for the first time so yeah

@NielsPilgaard
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You most likely have 32-bit Java, you need 64-bit, use the link in the post :)

@HugoLazaro07
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Hi, I was making a server with my friends. The server runs correctly but when we try to enter this is what appears to us. If anyone could help I will be grateful!

Captura de pantalla (98)

@HugoLazaro07
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Also this appear which I think its the real error and the missing entries that are missing.

Captura de pantalla (99)

@NielsPilgaard
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NielsPilgaard commented May 7, 2020 •
edited

Please do not ask for help in the comments, go the the support channel on my Discord.

:)

@jingleheimer-schmidt
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jingleheimer-schmidt commented Jul 21, 2020 •
edited

I just thought I'd add for anyone who may also be having issues with the twitch launcher, I downloaded MultiMC and installed it through that and it it all worked perfectly. So glad I can actually play Enigmatica and not just scream at twitch over and over lol

@Vesper145
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I am having trouble even just starting. It crashes before it even starts "An unexpected issue occured and the game has crashed. We're sorry for the inconvenience." and i can't get on the discord please help

@NielsPilgaard
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@Vester145 have you tried the fixes on this page? Why can't you get on the discord? :)

@Solid-Metal
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what that java command exactly do ?, for some reason it gave me worse performance, i use i7 7700HQ with 16GB of ram, memory allocated 8gb

@NielsPilgaard
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You can read about them here: https://www.reddit.com/r/feedthebeast/comments/5jhuk9/modded_mc_and_memory_usage_a_history_with_a/

@Akaitatsu
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Akaitatsu commented Feb 25, 2021 •
edited

Do you recommend using the same java arguments for servers? If not, what would you set differently?

Disregard, I see them in the settings.cfg, I use AMP to run my MC server and it likes to execute the jar directly.

@LUX-17
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LUX-17 commented Jul 6, 2021

Im running the game on 8G allocated memory and also wrote in all the java arguments recommended, but game still runs at 1 fps. Changing the RAM doesnt affect my frames. Also im using a mod pack with around 200 mods.

@fastcarter2
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Well I put the arguments into the textbox, and minecraft keeps crashing because of something related to the 1.8+ part

@fastcarter2
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image

@NielsPilgaard
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You don't have Java 8 64-bit installed, you need that :)

@Memgsas
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Memgsas commented Aug 22, 2021 •
edited

I have a issue in the game. Music plays fine, but any other sounds are cut off. Sound of rain, sound of machine tools, sound steps. The sound starts up, then abruptly breaks off and starts again after small delay.
Tried reinstalling everything from scratch.
Does not help. Enigmatica 2 - E2

@NielsPilgaard
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Please use our Discord channel for support: https://discord.gg/enigmatica

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