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Launcher and Java Settings

Choomb edited this page Aug 30, 2022 · 5 revisions

Launcher Settings

Curseforge Guide

Allocating more RAM

  1. Click the settings cog in the bottom left corner of your Curseforge Launcher
  2. Navigate to Minecraft under the Game Specific group.
  3. Scroll down to Allocated Memory setting under the Java Settings group.
  4. Allocate more ram through the slider noting that the recommended amount of RAM for MC Odyssey is 10GBs while the minimum is 8GBs.
  5. Relaunch the modpack.

Custom JVM Arguments

  1. Click the settings cog in the bottom left corner of your Curseforge Launcher
  2. Navigate to Minecraft under the Game Specific group.
  3. Scroll down to Additional Arguments setting under the Java Settings group.
  4. Set the Arguments to your preferred argument, a preferred one is: -XX:+UseG1GC -Dsun.rmi.dgc.server.gcInterval=2147483646 -XX:+UnlockExperimentalVMOptions -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M as posted by CPW in this Reddit Post
  5. Relaunch the modpack.

Fixing Modpack Installation

  1. Right click on the modpack instance.
  2. Click View Profile
  3. Click on the three dots next to the Play button.
  4. Click Repair Profile

Updating Java Version

  1. Click the settings cog in the bottom left corner of your Curseforge Launcher
  2. Navigate to Minecraft under the Game Specific group.
  3. Scroll down to Java Version setting under the Java Settings group.
  4. Select the latest and highest number, (Preferably Java 1.8.0.301 or more, if it isn't available, please update your Java.)

MultiMC Guide

Installing MultiMC

Go to the website https://multimc.org , Click "Download & Install", Choose your operating system and download the program. Extract the program to where you want it, such as your desktop, although somewhere close to the root of your drive would be better. You have installed MultiMC!

Adding the Modpack to MultiMC

Hit "Add Instance" -> Click "CurseForge" -> Search for "MC Odyssey" -> Click the pack -> Click "Ok" and wait for the pack to finish downloading. You have now installed the Modpack!

EDIT: As of right now, this method does not work, you would probably have to use Curseforge to download the pack before moving over to MultiMC, follow the method above for such. You should be able to download most mods through MultiMC/PolyMC and just move the mods over from Curseforge (or Manually, if you'd like to ditch Curse completely)

Allocating More RAM

Right-click your MC Odyssey Instance -> Click Edit Instance -> Click Settings -> Tick "Memory" Change the field "Maximum Memory Allocation" to your desired RAM amount in megabytes (1024 x gigabytes) Example: 8096MB

You will NOT need more than 8096MB to play MC Odyssey Lite. You will however want at least 10GB to play optimally, in the future allocating more is appreciated.

Custom JVM Arguments

Right-click your MC Odyssey Instance - Click Edit Instance -> Click Settings -> Tick "Java arguments" Add this to the text box below "Java arguments":

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

These JVM arguments improve performance and Java's garbage collection. They are recommended by CPW in this Reddit Post

Fixing Modpack Installation

Sadly, MultiMC offers no built-in way of repairing your instances. You will have to completely reinstall the pack. Right-click your MC Odyssey Instance -> Click "Delete" -> Click "Yes" Re-install your instance through the "Add Instance" button.

You will have to repeat the "Allocating more RAM" and "Custom JVM Arguments" steps.

Updating the Modpack

Sadly, MultiMC offers no built-in way of updating your instances. You will have to completely reinstall the pack. Backup both your Journeymaps folder and options.txt files. Right-click your MC Odyssey Instance -> Click "Delete" -> Click "Yes" Re-install your instance through the "Add Instance" button. Add both JourneyMaps folder and options.txt file to the new instance.

You will have to repeat the "Allocating more RAM" and "Custom JVM Arguments" steps.

OpenJ9 Guide