This is how to reduce lag in Minecraft. This is very simple and anyone can do it, it doesn't make it perfect but does reduce the jumpiness and lag. Ok, Lets Get Started 1. Open Up Minecraft. 2. Load your world, and press "Escape" Then "Options" 3. Have the settings the way i do. And make sure your Minecraft is full screen, (Runs Better) Graphics on "Fast" NOT "Fancy": What fancy does it enhances the graphics making it look better but not run better, so with it on fast it will run faster and look pretty much the same. Render Distance: This is how far away you can see so if it was on far you could see a lot further than if it was on tiny, but being on tiny it will reduce the amount of graphics having to be produced at that time. Minecraft On Full-screen: What this does it space the game out more and its not all squashed up so it does make it look better on Full-screen and it also runs smother with not jumpiness and lag. This is what i use, and it does make a big difference.