How can you stop minecraft lagging?

Answer 1

Well, you can help the lag, but you can't stop it completely. You can do this by pausing the game, going into options, and turning down the render distance, turning off smooth lighting, limiting the frame rate, and turning the graphics from fancy to fast.

-Also if you have a dual or quad core processor, try restricting minecraft to using 1 or 2 cpu cores.

Go into task manager and click on the processes tab. Find Minecraft in the list.

Right click on Minecraft and go to Set Affinity and un-check CPU 2 and 3 (if you have a quad core processor) or just 2 (if you have a dual core processor)