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Fixed in Unity 4.3.4



Found in


Issue ID




Maverick and Unity performance issues




Priority: 2Necessary for shipping a final release


Severity: 1Crash, freeze, data loss, work stops

On some Mac's with OS X 10.9 Unity performance is very bad, including stuttering, editor freezes, editor lags and similar.

We found that there seems to be a leak in Maverick's OpenGL ARB VBO implementation.
Our text rendering creates and destroys a lot of VBO's so it is most likely that this happened after around 10 minutes of working with Unity and the inspector or other text heavy components in unity uploading a lot of geometry.

Terrains will be especially affected, but of course just loading a scene / unloading a scene will load / unload VBO's for all the meshes too.

This issue has been fixed with a workaround in 4.3.4. We are working with Apple to get a proper fix done, at which point we will be able to remove the workaround.

Comments (117)

  1. 371aa13b642122047dc730b0ad9ad5a0?d=mm


    Nov 20, 2013 22:59

    Much worse problems in4.3, had to revert to 4.2 which freezes semi regularly but is bearable; just.

  2. A92052642a7db403463252d4e0c8b6aa?d=mm


    Nov 20, 2013 21:46

    Performance is fine when Unity is first started. But after a minute or two, it stutters like crazy. The profiler shows unbelievable increases in "Overhead". When the project is deployed to a mobile device, it runs like butter. :)

  3. 92bbbff13cb2faeef9050833cbc9ac2c?d=mm


    Nov 20, 2013 20:21

    while playing do not select any game object. when you select a game object while it tries to refresh inspector values it cause glitch on game view.

  4. Dc829c7ee32581538667c0886754d1ff?d=mm

    Daniel Brauer

    Nov 20, 2013 18:11

    We've encountered this issue with our project and 4.3.0f4. It seems sporadic, and is usually temporarily fixed by restarting Unity.

  5. C485f9c7daedaa39d763fd66b7dbdb72?d=mm


    Nov 20, 2013 17:22

    Running build 4.3.0f4 with Mavericks. If I have the hierarchy, project, etc open while running a game - get nasty frame hitches. If I play with "maximize on play" selected, the performance is substantially better. Editor crashes 1-2 times daily in addition to long pauses (3-4 time daily ranging between 5-10 minutes). Lose about an hour of work each day due to this issue.

  6. 24c9c94a28ad57001c84dc98b36e9c93?d=mm


    Nov 20, 2013 16:43

    Really bad performance in editor and on play. Seems to be the bad performance builds up through successive plays. Restarting the scene does not help but closing the Unity editor and opening it again resolves it temporarily.

    Editor jitters really badly, but you can see for example transform values being updated smoothly

  7. 3e7f2bbe3b6abfdf7c42b9115c77281e?d=mm


    Nov 20, 2013 16:43

    Major Issues with load in the editor and builds, it is stuttering very badly during development. We have a client build to be ready for Friday and this is a major issue. Seems to get progressively worse during multiple runs of the scene and over time.

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