Minecraft Forums

So before 1.7 my MC worked flawlessly. After the recent update, I loaded up my current world. It plays fine for about 5 minutes, then it starts to lag, also getting severe block lag (I break a block and it re-appears) similar to what happens in multiplayer... but i'm in singleplayer.

What changed in 1.7? and why is it this block lag multiplayer crap when I'm in singleplayer?

Im on 64bit Java, 12gb Ram, GTX 580, i7. And as I said, worked PERFECT before I updated, No excuse for any type of lag.

Well I gave it 6gb, still super super laggy after like 10 mins. I have to completely close the game and re-open it to fix it for another 10 mins.

Also im not using any mods, not even using a texture packAlso id like to add, Im pretty sure I know what the problem is I just dont know why or how to fix it.

Javaw.exe is using ungodly amounts of my CPU, bringing it to 90+ % use after about 10 mins of running MC

Doin fine when I first load the game: http://gyazo.com/694a84aef7f35b07057df0d38e12420c.png

caving for about 10 mins, started to lag horribly again. CPU at 90+ %, tried high priority and affinity http://gyazo.com/0df56d4a86729738e7df1a7a2ed42165.png

I can play other much more intensive games for hours with no problems :/

I have to end process tree on all java.exe's to get my cpu back to normal, even after I close MC