CoreSwap Mod (1.20.1)
CoreSwap Mod speeds up chunk generation in Minecraft Java Edition with a native Rust core. It keeps your normal worlds and other mods the same while it boosts your FPS. The mod handles terrain generation for the main dimensions so new areas load fast as you travel. It also runs on both singleplayer worlds and dedicated multiplayer servers.

Features:
- Replaces standard Java world generation with a native Rust core to improve your frame rates.
- Generates terrain for the Overworld, the Nether, and the End through its native engine.
- Lets custom dimensions from other mods fall back to normal vanilla generation without issues.
- Pairs cleanly with Sodium and Iris with zero conflicts, as this mod handles chunk generation while Sodium handles rendering.
- Works on dedicated multiplayer servers in addition to singleplayer worlds.
- Displays a C++ worldgen line in the game log for historical reasons, even though the native core uses Rust.