Username: Lavapocalypse

Type of bug: astetics

Version of forge: 1.8-Forge11.14.1.1334

Dalek Mod Minecraft Version (E.g. 1.8, 1.7.10): 1.8

Dalek Mod Update Number: 42.2

List of mods (if you use alot make a list on a seperate comment: optifine, dalek mod

What was the user doing prior to this: working on my house

Location of bug [Forum/Dalek Mod/DMU Beta or Public Servers]: DMU public

Status -Please update when necessary: solved

Description: it makes the chunks duplicate

What it affects in-game: everything

Image(please link to image-uploading service/embed in this post): 

Any other information: it doesnt happen in 1.7.10

Try updating forge. You are on a very old build, try this one:
http://files.minecraftforge.net/maven/net/minecraftforge/forge/1.8-11.14.4.1577/forge-1.8-11.14.4.1577-installer.jar

 alright i will update as soon as i have time sorry i didnt reply sooner

i updated forge and it seemed to work thanks for your help