OptiFine 1.7.10_HD_B5 - optimized chunk rendering, FPS +30% is possible - report OpenGL errors in chat - updated Forge compatibility - compatible with Forge #1291 (30.01.2015) OptiFine 1.7.10_HD_B4 - various bugfixes - fixed Forge compatibility - compatible with Forge #1240 (19.12.2014) OptiFine 1.7.10_HD_B1 - fixed Forge compatibility - compatible with Forge #1240 (12.12.2014) OptiFine 1.7.10_HD_A4 - fixed compatibility with Railcraft and IC2 - compatible with Forge #1180 (07.07.2014)