RLCraft Server Hosting — Why More RAM Makes It Worse (2026)
RLCraft is still the most famous “hard” modpack ever made — Shivaxi’s brutal survival gauntlet of dragons, thirst, skills, and one-shot deaths. It’s also a special case for hosting, because it runs on Minecraft 1.12.2, and 2018-era Minecraft does not behave like modern packs.
The counterintuitive RAM rule
| Players | RAM |
|---|---|
| 2–4 friends | 4 GB |
| 5–10 players | 6 GB |
| More RAM than that | usually worse, not better |
Old Forge versions handle large heaps poorly — garbage-collection pauses grow with heap size, and an RLCraft server with 12 GB frequently stutters more than the same server on 6 GB. What actually limits RLCraft is single-core CPU speed: worldgen (Recurrent Complex structures) and mob AI (Lycanites Mobs) hammer one thread. Spend your budget on fast cores, not big numbers.
Setup walkthrough
RLCraft isn’t in one-click catalogs the way modern packs are, so it’s a short manual job:
- Create a Forge 1.12.2 server (matching the Forge build RLCraft specifies for its version).
- Download RLCraft’s server pack from CurseForge and upload its
mods/,config/, andscripts/folders via SFTP. - Remove nothing “to optimize” — RLCraft’s balance depends on its config web; trimming mods causes cascade errors.
- First boot generates Recurrent Complex structure data — slow once, fine after.
- Pregen aggressively (
chunky radius 4000). Fresh-chunk generation is RLCraft’s single biggest lag source in live play.
Want the flavor without the manual setup? RLCraft: Dregora — RLCraft fused with the Dregora custom world — installs in one click on FadeHost.
The crashes every RLCraft admin meets
“Ticking entity” crash → almost always a Lycanites mob in a broken state. The crash report names the entity and coordinates; set remove-erroring-entities=true temporarily in forge.cfg (or use the report’s coords to purge it) — then turn the flag back off; leaving it on masks real problems.
Watchdog kills the server during worldgen → 1.12.2’s default max-tick-time=60000 is too aggressive for RLCraft’s structure gen. Raise it (or set -1 while pregenning), and the “crash” disappears.
Rubber-banding with good TPS → usually item-entity pileups from mass mob deaths. An entity-clearing schedule (every 10–15 min, with warnings) is standard on public RLCraft servers.
Cost to run one
RLCraft’s sweet spot — 6 GB on a fast node — is $7.50/month on FadeHost ($2.50 base + 5 GB at $1/GB), backups and DDoS protection included. Start with the 7-day free trial: if you’re going to die to a dragon on day one anyway, it might as well be free.
For modern packs where the RAM math is friendlier, see the general modded hosting guide.