Minecraft Forums

I have been playing in my minecraft vanilla survival world for a while. Recently I was forced to re-install it and I had to copy and paste that survival world to save it. When I started playing on it again I got a lot of lag spikes. I've restarted my computer, I've donated a bit more ram, which usually doesn't fix lag issues, and I've updated my java. I will be having 150+ fps and them when the lag spikes hit, it drops to 0 fps. It isn't because I'm in a certain area, it happens on every world, just a bit worse on this world. I've never had this problem before. At one point I wanted to see if it was just that my computer was bad, which it isn't, but just in case I turned the settings onto the lowest they could be. I'm getting 300+ frames but still I'd get random lag spikes that would bring me down to 0 fps. I've tried limiting my fps so it doesn't have to try to keep it up, but that doesn't work. Also, I noticed that my memory gets jacked up high and really quickly. I NEED to use at LEAST 5 GB to run minecraft, anything lower will cause constant lag. There must be a memory leak or something because it's using up all of that memory way too fast. I also have only 1 java installed and I've tried setting high priority to java. Minecraft is using more than 7 million KB of my memory and 4% of my cpu. It's really frustrating. Btw, this is a vanilla world meaning there are no mods, I'm playing on minecraft 1.8.2 pre-release 4, and I have a great computer, or at least I think I do.



My Computer Specs:



Processor: AMD FX(tm)-8120 Eight-Core Processor 3.10GHz



Installed memory (RAM): 8.00 GB



System Type: 64-bit Operating System



Operating System: Windows 7 Professional 64-bit

Try downgrading to 1.7.10, just don't run any 1.8 worlds on it. If it's fixed for you, then it's a problem with 1.8. 1.8 runs very slow and choppy on some systems, even good computers. See if you have the same problem.

I'll try that, but what I meant was that it doesn't happen in certain areas, I messed up there.

Turns out it's SLOWER when I'm not on the pre-release. Also my memory goes up 20% a second when I do.

This seems to be an on-going problem with Minecraft 1.8 centered around Java's in-built garbage collector (which gets rid of unnecessary/unneeded code in which the developers identify). In 1.8, it's around 250 MB/s, so yah, that's really bad. A huge increase from 1.7. Though only these specific people experience this (not identified toward why these certain people get it (happens on high & low end computers)), we'll just have to wait for Mojang to identify this problem and fix it.