Making your own roblox replication system script

If you've ever tried to build a high-player count game, you know that a custom roblox replication system script is basically the backbone of keeping things smooth. Roblox does a lot of the heavy lifting for us out of the box, but let's be real—sometimes its "Automatic" settings are just too much. If you're syncing every single movement of a hundred NPCs or projectiles using the default physics engine, your server is going to struggle. That's where writing your own logic comes in to save your frame rate. ...

February 3, 2026 · 7 min · Gavira Hause