Here are a few scripts that you can try:
These use methods like emoji spam or massive text strings to lag anyone who has their chat window open. Physics/Weld Laggers: fe server lagger script op roblox scripts link
This script, found online, locates all Particle Emitters in the game and fires a Remote Event for each one with a massive argument (1,000,000), telling the server to emit huge numbers of particles for every effect. The server, now overwhelmed with millions of individual particle creation requests, has no computing power left for normal tasks like moving players or processing damage. To the players, this feels like a server freeze or extreme lag. Here are a few scripts that you can