A lightweight performance optimization mod designed specifically for low-end PCs.
\nLon tackles the most frustrating lag issues in Minecraft through intelligent chunk
\npre-generation, real-time server monitoring, and automatic memory management \u2014 all
\nin a package under 20KB.<\/p>\n
## \u2728 Core Features<\/p>\n
### \u26a1 Smart Chunk Pre-Generation ### \ud83d\udcca Real-Time Server Monitoring ## \ud83d\udcdd Notes —<\/p>\n **Enjoy smoother gameplay on your potato PC! \ud83e\udd54**<\/p>\n","protected":false},"excerpt":{"rendered":" Lon is a lightweight performance mod for Minecraft that reduces chunk-loading lag with pre-generation, monitors server TPS, and optimizes memory usage with auto GC\u2014keeping the game smooth on low-end PCs.<\/p>\n","protected":false},"featured_media":95359,"template":"","meta":{"_minecraft_slug":"lon","_minecraft_project_id":"WGshrxiS","_minecraft_author":"nilcil","_minecraft_license":"LicenseRef-All-Rights-Reserved","_minecraft_downloads":11,"_minecraft_follows":1,"_minecraft_client_side":"optional","_minecraft_server_side":"optional","_minecraft_storage_type":"zip","_minecraft_archive_name":"lon.zip","_minecraft_size_bytes":27155,"_minecraft_version_count":1,"_minecraft_updated_at":"2026-05-16T20:04:02.744493Z","_minecraft_date_created":"2026-05-15T03:48:39.701689Z","_minecraft_date_modified":"2026-05-10T01:36:31.930131Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/lon","_minecraft_icon_attachment_id":95359,"_minecraft_imported_at":"2026-06-05T11:07:35+00:00","_minecraft_import_hash":"a2746f37b37208c9dd642a2010894113","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[97,92],"mod_loader":[99],"minecraft_version":[163],"class_list":["post-95358","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-fabric","mod_category-utility","mod_loader-fabric","minecraft_version-26-1-2"],"yoast_head":"\n
\nUse **\/pregen
\nlag spikes when exploring new terrain, flying with elytra, or traveling through
\nthe Nether. The command runs entirely on the main server thread with batch
\nprocessing to prevent server strain.<\/p>\n
\n– **\/lon tps** \u2014 Check server performance at a glance with color-coded feedback
\n – \ud83d\udfe2 Green (\u226519.0): Running smoothly
\n – \ud83d\udfe1 Yellow (\u226515.0): Moderate load
\n – \ud83d\udd34 Red (<15.0): Heavy lag detected\n- **\/lon memory** \u2014 View current memory usage, total allocated, and maximum heap\n- **\/lon memory gc** \u2014 Trigger manual garbage collection and see how much memory was freed\n\n### \ud83e\udde0 Intelligent Memory Management\n- **Automatic GC**: When memory usage exceeds 80% of maximum heap, Lon automatically \n triggers garbage collection with a built-in cooldown to prevent performance impact\n- **Object Pooling**: Reuses frequently created objects to reduce allocation pressure\n- **String Deduplication**: Eliminates duplicate string instances to save memory\n\n### \ud83d\udd2e Planned Features\n- On-screen HUD showing FPS and memory (awaiting Fabric API stabilization for 26.1.2)\n\n## \ud83d\udce6 Requirements\n- Minecraft **26.1.2**\n- Fabric Loader **\u2265 0.19.1**\n- Fabric API **0.148.0+26.1.2**\n- Java **25**\n\n## \ud83d\udca1 Recommendations\nFor the ultimate optimization stack on low-end hardware, pair Lon with:\n- **Sodium** (rendering optimization)\n- **Lithium** (game logic optimization)\n- **FerriteCore** (memory compression)\n\n## \u2699\ufe0f Commands Cheat Sheet\n| Command | Description |\n|---------|-------------|\n| `\/pregen
\n| `\/pregen stop` | Stop active pre-generation |
\n| `\/pregen status` | Check pre-generation progress |
\n| `\/lon tps` | Display server TPS |
\n| `\/lon memory` | Show memory usage |
\n| `\/lon memory gc` | Force garbage collection |<\/p>\n
\n– FPS display feature temporarily disabled due to unstable Fabric API in 26.1.2
\n– This mod is **only 19KB** \u2014 compatible with virtually any modpack
\n– All commands can be used in single-player and multiplayer<\/p>\n