So not sure whats going on here... Only have 1 world survival mode. So my world is doing fine no lag what so ever. Started digging in this one area and then my FPS drops clear down to 1FPS. Checked my processes, only 30% usage on my GPU. 5% usage on my CPU, So i know them 2 things are not the problem.. I got a whole 32Gigs of ram i dedicated at least 20Gigs to minecraft alone. Im not sure exactly what I found barred under this Cobblestone. But it dropped my 60 FPS to like a near 1FPS. Not sure exactly what happened with it. Any ideas? The Processes does show that it uses all 20Gigs of ram so.. maybe it needs more then that?