Terrain partial generating with texture packs active

[Zhaveros]

So I'm putting a lot of effort into making cool buildings and I've been designing them to suit the LB photo realism x64. But the problem is, is that the terrain doesn't generate properly. It exists but when I move away, random spots of terrain disappear. It's not smooth at all. I have like half the render distance on my screen pretty much. All I see are random pieces of terrain far away. Anyone know the issue?

---------- Post added 2012-09-22 at 01:57 PM ----------

So I just looked at my allocated memory and it's only 660 MB. How the fuck the game runs without crashing is beyond me. So I'm going to go find out how to give it some more.

[Fuzzzie]

Make a new batch file for your launcher and have it look like this:

javaw -Xmx%%%%m -Xms####m -jar "C:\Users\Fuzzzie\AppData\Roaming\.minecraft\MinecraftLauncher.jar"

%%%% = RAM you want to use
#### = Half of what %%%% is.

for example, if you have 4GB of ram type:

javaw -Xmx4096m -Xms2048m -jar "C:\Users\Fuzzzie\AppData\Roaming\.minecraft\MinecraftLauncher.jar"

Also, I strongly recommend Optifine.
http://www.minecraftforum.net/topic/...l__%20optifine

Look into picking up OptiFine HD B3 Ultra

Edit: Also, make sure you change the Minecraft Path unless your username is Fuzzzie too.