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  1. Minecraft: Java Edition
  2. MC-560

Sound made by mobs in water causes massive FPS drop

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Minecraft 1.6.1
    • Minecraft 1.4.2, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w02a, Snapshot 13w02b, Snapshot 13w04a, Snapshot 13w06a, Snapshot 13w09a, Snapshot 13w10a, Minecraft 1.5, Minecraft 1.5.1
    • Windows 7 64-bit
      64-bit Java 7 Update 3
      Vanilla
    • Confirmed

      Summary:
      When two or more animals collide (or are touching) in water, and the player moves more than 16 blocks away from them, there is a massive FPS drop. However, when the sound is off this issue does not occur.

      How to Reproduce:
      Make sure sound is set above 0%! Dig a 1x1 hole 2 deep. Place water in the bottom. Spawn two or more chickens (more will make it worse) in the hole. Walk 16-18 blocks away, while observing FPS and sound CPU usage on the debug chart.

      Attached is a video of reproducing the bug.

        1. Demo.wmv
          4.14 MB
        2. mob-in-water lag fix MC1.4.2.zip
          11 kB
        3. soundsystem lag fix, any MC version.zip
          9 kB

            Unassigned Unassigned
            yoshiyahu HeroUnit
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            82 Vote for this issue
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            6 Start watching this issue

              Created:
              Updated:
              Resolved:
              CHK: