How To Use Optifine. From Java issues with Optifine to even not being able to install Optifine using the launcher, no matter what this video will help you get Optifine installed. If you want to use OptiFine along with Minecraft Forge, then you have to install the Forge first before you install OptiFine.
If anyone can help me with this. OptiFine comes with many optimizations that should increase the FPS without any configuration. It is one of the most downloaded Minecraft mods.
Follow this tutorial to on how to install OptiFine for Minecraft.
If you still have any questions, see this tutorial on how to install Minecraft Mods with the forge.
It was designed to overhaul Minecraft's lighting and rendering systems to increase their efficiency and visibility. On the bottom-left in the Minecraft window, select Optifine from the drop-down menu, or create a new profile for Optifine. Copy all of the files from the Optifine folder into the minecraft.jar - being careful not to place them inside a folder.