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  1. Minecraft: Java Edition
  2. MC-123584

Updating blocks creates lag spikes proportional to geometry in chunk section

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    Details

    • Type: Bug
    • Status: Reopened
    • Resolution: Unresolved
    • Affects Version/s: Minecraft 17w50a, Minecraft 18w01a, Minecraft 18w07c, Minecraft 18w09a, Minecraft 18w11a, Minecraft 18w19b, Minecraft 1.13-pre1, Minecraft 1.13-pre5, Minecraft 1.13-pre6, Minecraft 1.13-pre7, Minecraft 1.13-pre8, Minecraft 1.13-pre9, Minecraft 1.13-pre10, Minecraft 1.13, Minecraft 18w30b, Minecraft 1.13.2, Minecraft 18w45a, Minecraft 18w48a, Minecraft 18w48b, Minecraft 18w49a, Minecraft 18w50a, Minecraft 19w04b, Minecraft 19w05a, Minecraft 19w06a, Minecraft 19w07a, Minecraft 19w08b, Minecraft 19w11b, Minecraft 19w12b, Minecraft 19w13b, Minecraft 19w14a, Minecraft 19w14b, Minecraft 1.14 Pre-Release 3, Minecraft 1.14 Pre-Release 5, Minecraft 1.14, Minecraft 1.14.1 Pre-Release 1, Minecraft 1.14.1, Minecraft 1.14.2 Pre-Release 2, Minecraft 1.14.2 Pre-Release 3, Minecraft 1.14.2, Minecraft 1.14.3 Pre-Release 2, Minecraft 1.14.3, 1.14.4, 19w37a, 19w39a, 19w40a, 19w41a, 19w42a, 19w45a, 1.15 Pre-release 1, 1.15 Pre-Release 2, 1.15 Pre-release 6
    • Fix Version/s: None
    • Labels:
    • Confirmation Status:
      Confirmed
    • Category:
      Block states, Performance, Rendering
    • Mojang Priority:
      Important

      Description

      The bug

      Any block change seems to trigger a redraw of the entire chunk section. This is most noticeable when breaking and replacing blocks, but is also caused by wheat growing, for example. Lag is increased depending on the geometry inside the chunk section – complex models like fences cause greater lag.

      This is client-side rendering issue since when filling large areas the command success message appears almost instantaneously in the log but the game freezes for some seconds.

      When the debug rendering pie chart is visible the following warnings are logged:

      [21:20:51] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer.level.terrain_setup.rebuildNear.build near' took aprox 223.112349 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer.level.terrain_setup.rebuildNear.build near' took aprox 1796.166532 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer.level.terrain_setup.rebuildNear' took aprox 2046.063861 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer.level.terrain_setup' took aprox 2046.184909 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer.level' took aprox 2049.560368 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root.gameRenderer' took aprox 2051.362563 ms
[21:20:53] [Client thread/WARN]: Something's taking too long! 'root' took aprox 2054.692309 m

      How to reproduce

      1. Use the following command 
        /fill ~1 ~1 ~1 ~15 ~15 ~15 oak_fence
      2. Place or break a block next to the filled fences

        Attachments

        1. 2019-08-09_21.25.44.png
          2019-08-09_21.25.44.png
          1.29 MB
        2. 2019-09-13_23.41.51.png
          2019-09-13_23.41.51.png
          1.20 MB
        3. 2019-11-08_08.39.43.png
          2019-11-08_08.39.43.png
          707 kB
        4. 2019-11-08_08.41.19.png
          2019-11-08_08.41.19.png
          694 kB
        5. lag spikes .png
          lag spikes .png
          1.60 MB
        6. MC-lag_spike_.mp4
          673 kB
        7. rebuildNear lag example world.zip
          393 kB
        8. Screenshot (930).png
          Screenshot (930).png
          130 kB
        9. Screenshot (931).png
          Screenshot (931).png
          207 kB
        10. Screenshot (932).png
          Screenshot (932).png
          24 kB

          Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MC-123582 Rendering Error

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          Bug - A problem which impairs or prevents the functions of the product. MC-123762 Extreme Frame Drop When Placing/Breaking Blocks

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          Bug - A problem which impairs or prevents the functions of the product. MC-124153 MC-38433 is back/still in the game

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          Bug - A problem which impairs or prevents the functions of the product. MC-126518 Redstone or lighting updates causing severe lag and framerate drops

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          Bug - A problem which impairs or prevents the functions of the product. MC-129545 The FPS is drop to 0 when loading the chunks.

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          Bug - A problem which impairs or prevents the functions of the product. MC-130282 Decaying leaf blocks cause severe micro stuttering

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          Bug - A problem which impairs or prevents the functions of the product. MC-131549 Every block change results in it re-rendering

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          Bug - A problem which impairs or prevents the functions of the product. MC-133262 lagspikes

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          Bug - A problem which impairs or prevents the functions of the product. MC-144342 Lag spikes

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          Bug - A problem which impairs or prevents the functions of the product. MC-144465 Growing bamboo creates noticeable lag within a set radius

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          Bug - A problem which impairs or prevents the functions of the product. MC-145095 Visual Stutter on Block Placing

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          Bug - A problem which impairs or prevents the functions of the product. MC-145665 FPS drop when breaking/placing blocks

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          Bug - A problem which impairs or prevents the functions of the product. MC-147172 Placing and Breaking Blocks Causes Lag Spike

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          Bug - A problem which impairs or prevents the functions of the product. MC-148323 Major Frame Drops every time bamboo grows

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          Bug - A problem which impairs or prevents the functions of the product. MC-149279 small freeze spike with blocks being broken and being placed

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          Bug - A problem which impairs or prevents the functions of the product. MC-149525 Bamboo creates lag spikes

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          relates to

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            Activity

              People

              • Assignee:
                slicedlime [Mojang] slicedlime
                Reporter:
                marcono1234 [Mod] Marcono1234
              • Votes:
                409 Vote for this issue
                Watchers:
                155 Start watching this issue

                Dates

                • Created:
                  Updated:
                  CHK: