How to Host an Enigmatica 2: Expert - Extended Server

Start the server with at least 8 GB of RAM allocated. Enigmatica 2: Expert - Extended builds its own extra crafting chains and additional mod integrations on top of E2E's already heavy recipe overhaul, and 8 GB is the floor where Forge 1.12.2 can load everything without garbage-collection stalls once machines start running.

Import the modpack from a clean server-pack source instead of zipping up a client install. Mixing in client-side resource or performance mods from a player's export is the fastest way to end up with mod ID conflicts on a pack this dense with cross-mod recipes.

Watch the console through the full first boot. With this many interlocking mods, a clean startup means every mod reaches its init and postinit phases and the world generator finishes without a crash — don't assume it's fine just because the process is still running.

Only invite players once that first clean boot has fully finished and you've confirmed the world loads a chunk without errors. Extended's deeper mod integration means a half-loaded world can mask a missing dependency that only breaks a specific recipe chain later.

Take a backup before importing an existing world, updating the loader, or changing configs. Expert-mode progress in packs like this is measured in multi-day automation and processing chains — losing one late-game setup to an untested config change is a much bigger loss here than on a vanilla-recipe pack.