BadOptimizations vs ImmediatelyFast

BadOptimizations is a free Minecraft mod aimed at client-side frame-rate performance. It uses a multi-loader setup and lists compatibility with Minecraft 1.21.6, 1.21.7 and 26.2. The mod runs on the game client, so its stated performance focus concerns the player’s local installation rather than server operation. Dedicated server support is not provided. Sodium is not required, leaving it independent of that particular mod dependency. The project is distributed through its Modrinth website and has a free plan. Its multi-loader designation is relevant for players whose installations use different supported loader environments. Before installing, players need to match the mod to one of the listed Minecraft versions and to their chosen loader. Server administrators should distinguish this client scope from server-side tools, since the entry lists no dedicated-server capability. BadOptimizations is therefore a client performance option for compatible Minecraft releases, with version and loader compatibility forming the main setup considerations.

ImmediatelyFast is a free, open source Minecraft mod that improves client-side rendering performance in Minecraft: Java Edition. It batches draw calls using a custom buffer and sends data to the GPU more efficiently. Its optimizations cover entities, block entities, particles, text, GUI and HUD, maps, and immediate mode rendering used by other mods. The project supports Fabric, Forge, NeoForge, and Quilt, with compatibility listed for Minecraft versions 1.18.2 through 1.21.x and versions 26.1.x, 26.2, and 26.3. It is designed to work with most mods and modpacks, but names OptiFabric, OptiFine, LunarClient, and LabyMod as incompatibilities. The project says it can improve FPS when the CPU is the bottleneck, with slower CPUs benefiting more than very fast ones. A configuration file in the Minecraft instance’s config folder offers performance or compatibility options. The mod is licensed under LGPL-3.0-or-later, and developers can consult API documentation. The project links to a GitHub issue tracker and Discord server for support.