Minecraft Forums

So I went a really long time without playing Minecraft. I just started playing it again and I noticed recently on this computer I have had some major lag spikes. I then put settings down and still did nothing. It still even happens when I put the render on short. From 60 fps to 30 fps. And if its on normal it will go from 40 fps to 20 or sometimes even 14. Its becoming really annoying as this hasn't happen before. I decided to get Optifine and still that hasn't really done anything either. Does anyone know what the problem is or how I can fix it?