Hi im Ky and I have been having horrible lag on minecraft and Minecrafts Home Screen since about April. I have not been able to fix it after redownloading minecraft, java, and optifine. My laptop has lots of storage left and it works great with roblox. I have really been wanting to fix this for awhile. I am not a computer genius so I may not know some things that you guys are talking about. I can provide dxdiag if needed.