Can I limit or reduce RAM usage without upgrading? — Minecraft

You can trim your server's memory footprint somewhat without paying for a bigger plan — but there's a limit to how far tuning can take you, especially with heavy modpacks.

What you can do

Set a sensible RAM buffer in the Startup tab so spikes don't crash you.
Reduce load: lower view-distance, run fewer or lighter plugins/mods, pre-generate the world, and cap mob spawns.
Use Paper instead of Vanilla — it's more memory-efficient.
Keep -nogui (already in our startup) and stick to Aikar's flags rather than stacking your own.

Steps to lighten a server

Confirm the RAM buffer is set appropriately for your size.
Switch to Paper from the Versions tab if you're on Vanilla.
Lower view-distance and simulation-distance in server.properties.
Pre-generate with Chunky and cap mob spawns in spigot.yml.

Tip: These tweaks help, but you can't fit a heavy modpack into too little RAM. Past a certain point, upgrading is the only real fix.

Frequently asked questions

Can I make a big modpack fit in a small plan? Not really. Tuning helps at the margins, but demanding modpacks need the RAM they need — upgrading is the honest fix.

Does Paper really use less RAM than Vanilla? Yes, Paper is more memory-efficient and generally the better choice for plugin-capable servers watching their RAM.