FastCraft is designed to work alongside OptiFine . While OptiFine handles the GPU/Visual side, FastCraft handles the CPU/Internal side. Using both together is the "gold standard" for maximizing 1.8.9 performance. Is it still relevant?
: It helps manage RAM usage more effectively, which is critical for 1.8.9, a version often used for competitive PvP where every frame counts. fastcraft 1.8.9
Reduces sudden frame rate spikes and dips. FastCraft is designed to work alongside OptiFine
: Changes how the game calculates "sine" and "cosine" functions to give a slight frame boost. Entity Culling which is critical for 1.8.9
It lightens the load on your processor, which is often the bottleneck in Minecraft.