Because 1.8.9 is the gold standard for and servers like Hypixel, players have moved to a specialized suite of "Modern Performance" mods that do what FastCraft used to do: Performance mods 1.8.9 and below - GitHub Gist
Several key features have contributed to FastCraft 1.8.9's widespread adoption: fastcraft 1.8.9
: The developer explicitly stated they needed to finish a stable 1.7.10 build before moving to 1.8.9, a milestone that effectively marked the end of the mod's primary development cycle. What People Use Instead (The 1.8.9 "FastCraft" Experience) Because 1