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  1. Minecraft: Java Edition
  2. MC-1514

Extreme lag/game freeze around lighting glitches


    • Icon: Bug Bug
    • Resolution: Duplicate
    • None
    • Minecraft 1.4.2
    • OS: Windows Vista 32bit
      CPU: Intel Core2 Duo P8400 (2.26GHz)
      Memory: 4GB
      Graphics: GeForece 9600M GS (1GB)
      Java: build 1.6.0_37-b06 (Java 6 standard edition)
    • Unconfirmed
    • Survival

      Primary Problem: Encountered dark spots under mineshafts hanging mid-air in SMP, game appeared to freeze for a few seconds. Correct shadows would be shown when game resumed. Vulnerable to hostile mobs while game was "frozen."

      Full description: I was playing on SMP running a sand flatland world with mineshafts enabled. Underneath the mineshafts I frequently encountered lighting glitches (dark spots) where many hostile mobs had spawned. Once I got close enough, the lighting would be updated but this typically caused a near freeze in game performance. After a few seconds, the game would resume at normal FPS with the correct shadows displayed. The frustrating part is hostile mobs seemed to be unaffected so that when normal gameplay resumed, I would be surrounded by mobs and already taken a few hits of damage. Attempting to run away resulted in running into more glitches/more game-freezes and I would die.

            Unassigned Unassigned
            histidine_kinase Mike Johnson
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