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Recently my friend got his computer fixed and he was finally able to join my server. He was lagging a bit at first but then he made some changes that seemed to improve that. I also added another GB of RAM to my server using this code:

java -Xmx2048M -Xms2048M -jar minecraft_server.jar nogui

At this point it all went to hell. Another friend joined the server who experienced little to no lag (no more than usual), however my client completely crashed. This began a series of crashes from various simple actions:

  • Placed some pipes: 2 crashes
  • Removed pipes: crashed again

I reverted to the old code but it I'm still experiencing lag. I also tried removing my map and reinstalling the server launcher with the map in the folder. I believe I set it up the way it all should be, but nothing helped. Any help or suggestions would be greatly appreciated.

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How much physical RAM does this machine have? Is your client running on the same machine? What operating system is it? – SevenSidedDie Apr 22 '13 at 5:56
What kind of server do you have Tekkit , FTB or just vanilla minecraft? – JiaWei Yang Apr 22 '13 at 13:14
@JiaWeiYang FTB (it's in the tags). – SevenSidedDie Apr 22 '13 at 17:12
i have a i-7 prossesor, with a ge-force 600 graphics card and 16Gb of ram on my computer (just got it in december) – ben harris Apr 23 '13 at 20:38
also SevenSidedDie yes its on the same machine as my client but ive been running it for a month and a half now with no problems and i have windows 7 – ben harris Apr 24 '13 at 2:43

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