Why Roblox setgc Matters for Custom Scripts

If you've been messing around with Luau scripting lately, you've probably seen roblox setgc pop up in some of the more advanced exploit scripts or utility tools. It's one of those functions that sounds incredibly technical—and to be fair, it is—but once you break it down, it's actually pretty straightforward why people use it. Essentially, it's a way to interact with the "Garbage Collector" in Roblox's engine, which is the internal system responsible for cleaning up memory so the game doesn't crash every five minutes. ...

February 10, 2026 · 6 min · Daliah Ivin