Optifine HD

Optifine is probably the most popular mod to optimize your game by increasing its performance. The mod will add up considerable points to your FPS and it will be more comfortable for you to play Minecraft. It comes with a wide range of customizable settings of graphics, so you can easily get rid of unnecessary visual effects, enabling your game to show highest performance. It’s especially useful if you own a weak PC!

Along with improving the PC’s resource usage, it also comes with the shader pack support. With Optifine installed in your game, you can run any shader pack that you want. Just make sure you have switched off the Fast Render in the video settings.

To enable shaders, you must go to Options/Video Setting/Shaders and select the shader pack that you want to turn on.