BadOptimizations vs FerriteCore

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.

FerriteCore is a free, MIT-licensed coremod for Minecraft: Java Edition that targets RAM use. It reduces memory associated with block states, models, predicates, strings, voxel shapes and baked quads through a set of documented optimizations. Examples include replacing block-state neighbor tables with FastMaps, caching multipart model predicates, deduplicating model instances and reducing baked-quad memory. The project reports that individual techniques saved hundreds of megabytes in cited tests; one pack example showed post-garbage-collection memory moving from roughly 3.1 GB to 1.1–1.2 GB on the title screen. Several optimizations have no CPU impact during play, while some add load-time CPU cost. ThreadingDetector optimization is disabled by default because it may very rarely cause race conditions. FerriteCore supports Fabric, Forge, NeoForge and Quilt and is listed for Minecraft Java Edition versions 1.16.5 through 26.3, depending on loader builds. It is marked for both client and server use, and the maintainer recommends installing it on both because some optimizations apply server-side. Versions before 1.16 are not supported for backporting.