Hopper farms and mob grinders are the #1 cause of chunk lag on survival servers. CapLimit stops it at the source. Blocks placing a hopper once a chunk hits its limit Cancels mob spawns once a chunk hits its entity limit In-game GUI : /caplimit opens a menu with +/- buttons, no config editing /caplimit reload re-reads config.yml if you prefer hand-editing Permission caplimit.admin, op-only by default Built for Paper 26.2. Pairs well with LagLens: scan first, then cap what causes it. Support development: https://patreon.com/123black