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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. D70ea063f32e72eaded59a8f80525cb8?d=mm


    Sep 30, 2014 11:15

    4.5.4f1 unity terrible in mac land

  2. D70ea063f32e72eaded59a8f80525cb8?d=mm


    Sep 30, 2014 11:11

    mac Pro from 2009 with Graphics NVIDIA GeForce GT 120 512 MB having MAJOR problems too

  3. Bafdacb5590cf0da9a878a47e23280f0?d=mm


    Sep 03, 2014 01:59

    XCO, GMARK - are you on Unity 4.5.3 ? Upgraded to 4.5.3 and can report/confirm this issue as well.

  4. B36530eff44c377898b7fd8309cb6b05?d=mm


    Aug 31, 2014 09:45

    I'm experiencing the same crashing issues using Mavericks 10.9.4 and Unity 4.3.4 up to version 4.5.3p2.

    It usually is a resultant of running the application in editor multiple times, which seems to leak memory on my mac pro. The larger the scenes in terms of VBO's especially Terrain based systems cause crashes. In my case around 10 times a day perhaps more on a bad day.

    I have also tried an empty unity project and attempted to re-produce. After starting approximately 50 times it crashes the same way. This problem has not been fixed and pertains still in Maverick based systems.

  5. A97946457721fe85bf9b934c927016a6?d=mm


    Apr 28, 2014 23:33

    I am sorry to say that I am still experiencing the same issues! This has not been fixed!

  6. 09903a20e673187daf64a7ffa4ef80b7?d=mm


    Apr 25, 2014 00:33


  7. Ef0c9fdec5e3f83a768ac7a505cb0dce?d=mm


    Feb 04, 2014 21:29

    Freezing of the editor seems to have been resolved with 4.3.4 on Mavericks. In my projects, testing / debugging still has frame rate issues on Mavericks. 4.3.4 is much better overall, but still not comparable to performance on an earlier OS like Snow Leopard or Mountain Lion.

  8. 4352434c3a514912c8a0d82693d6cfc1?d=mm


    Feb 02, 2014 17:24

    Skribble - simply head to the Download section on the top-right corner of the page and download the software.

  9. C2329892148e19ef9c3eb09996c47c69?d=mm


    Feb 01, 2014 20:43

    IKONRAD where did you get the patch or what did you do?

  10. 4352434c3a514912c8a0d82693d6cfc1?d=mm


    Feb 01, 2014 13:32

    Yes, the performance is noticeably improved. It doesn't hang now and works like a charm. The only thing that still does not work is realtime debugging.

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