Lithium Mod (1.18.12, 1.18.2), a general-purpose optimization plugin for Minecraft, works to improve many systems (game physics and mob AI, etc.) without changing behavior. The mod works on both client and server. It can also be installed on servers without the need for clients to have it. The mod can be installed to see an average of 45% reduction in server tick times. This makes the game much more efficient.
Your game has an integrated server that ticks the world of your player, even single-player. Optimizing the server-side can help your computer’s processor focus on other tasks. This will result in better frame rates and responsiveness. Administrators can expect significant improvements in tick times for multiplayer servers. This will allow their hardware to handle more entities, chunks and players.
Phosphor, an optimization mod that pairs well with Lithium, is compatible and fully compatible.