Standard prop protection isn't enough. Use tools like or CPPI . These allow you to: Limit the number of props per player.

The Dark Side of Construction: Understanding GMod Server Crasher Dupes

. While these are often used maliciously, understanding how they work is key for server owners to protect their communities. Steam Community Common Methods & Mechanics

If you’ve run a Garry’s Mod server for more than a week, you’ve probably heard the horror story: Someone joins, spawns a single dupe, and within three seconds, the entire server freezes, crashes to desktop, or enters an infinite lag loop.

Dupes containing complex "prop-in-prop" or "parenting" structures (where props are physically attached in ways that conflict) can cause extreme physics lag or immediate crashes during the unfreezing process .