This project is abandoned. Please go to worldpregen.com for the new updated worlds up to 20,000 x 20,000 in size.remove lag on you minecraft server

just dowload a pregenrated world and upload it to your server

or check out SimplePregen that installs the world for you (good for server hostings since they have fast internet speeds)

check out my profile for more sizes

get your free server here

here is an example of a 2 mid core 4gb ram server

before:

after:

when generating new chunks it can be very laggy. so you have 3 solutions

1st solution is the just upgrade resources this is very expensive  

2nd solution is pregenerate your world but that very long and you need to instal stuff to do it 

3rd solution is just download 1 of my pregenerated worlds and just upload it to your server or use it as a world to play on

i just use a random seed for these worlds that are generated in a 2500 block radius from 0 0 so it's from -2500 -2500 to 2500 2500 so 5000x5000 worlds. you can still explore further but then it needs to generate new chunks so i could lag again. they are 600mb-800 mb. you can also check out my profile for some bigger and smaller ones

These pregenerated worlds are good for survival with your friends or alone or as a resource world. you can just download a different world and replace the resources world. every once in a while with a different world that is pregenerated. This can be a very nice way to make sure that your smp does not lag and you can still get new resources like wood and ores.

so what are you waiting for download it now and enjoy a less laggy experience