1.8.9: Fastcraft

FastCraft is a performance-boosting mod created by Player (Lukas). Unlike heavy shaders or total conversion mods, FastCraft runs silently in the background. It is essentially a set of "patches" applied directly to Minecraft’s source code to make rendering and world generation significantly faster.

Even great mods can conflict. Here is how to fix the three most common problems: fastcraft 1.8.9

Cause: FastCraft + OptiFine + Shaders rendering order error. Fix: In OptiFine settings (Video Settings > Performance), set "Smooth FPS" to OFF and "Chunk Loading" to Default. FastCraft handles these better. FastCraft is a performance-boosting mod created by Player