Modded Minecraft guides

Each guide answers one problem, with what the Modkeel lab saw in real games where it measured something.

• A mod hasn't updated to the new Minecraft version

  Five options, from waiting to a tested community port, and how to tell which are safe.

• Update a modpack without losing your world

  The order that keeps a way back: copy the world, a new instance, releases made for the version.

• Update a modpack in Prism Launcher

  Copy the instance with its saves, change the version, update the mods, and the jars Prism cannot update.

• Forge and NeoForge at half the FPS on NVIDIA

  The driver misses its Minecraft profile on (Neo)Forge; one JVM argument brings it back.

• Crash helper mods compared

  Five crash mods given the same crash in a real 26.2 client: which named the mod, which fixed it.

• Minecraft froze or closed with no crash report

  Where the cause is written instead, and how to halve the mods folder without losing the world.

• Crash help by error

  Mixin failures, missing classes, mod loading errors and out of memory, with the fix for each.

Looking for one mod or one Minecraft version? Mods the lab ran, lab data per version and community ports for versions their authors have not released for yet.