All of a sudden Minecraft just started to lag for no reason. After a few minutes my FPS will drop for a few seconds, then it returns to normal for a second or two then happens again. It doesn't seem to be a problem with my computer, since all the other programs work fine.(including games on Steam) I don't know what caused the sudden lag, but no matter what I do it doesn't seem to stop, it gets a little bit better, but just barely. I also receive random lag that affects everything, except my player. This results in block, mob, and item lag as well as rubberbanding. As well as lag upon loading and creating the world, and chunks.