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Issue ID




[Metal] Performance degradation on iOS devices




Priority: 2Necessary for shipping a final release


Severity: 4Minor or cosmetic issue

To reproduce:
1. Open the GraphicsPerf project with Unity 2018.2;
2. Change Graphics API to Metal;
3. Build and run DynamicVBO, Lights, Materials, Particles, ParticlesCollision and Tesselation scenes on iOS devices.
4. Repeat all steps with Unity 2018.3.0a6;
5. Compare frame time.

Important: let devices to cool down between each run.

Expected result: performance increases or at least remains the same.
Actual results: frame times increase 6-12% in trunk, even 40% with some devices.

Devices under testing:
-iPad Mini 4 (SoC: A8, iOS: 11.4),
-iPhone SE (SoC: A9, iOS: 10.0.1),
-iPhone X (SoC: A11, iOS: 11.4),
-iPad 5th gen (SoC: A9, iOS: 10.3).

Tested with: 2018.1.f1 and 2018.3.0a6

Comments (7)

  1. D7364a8c7243b12aaa17046b8a103472?d=mm


    Jun 13, 2019 08:27

    Marketing and communications – if the company you end up working for markets its products or services to English-speaking countries here , or releases other sorts of communications such as press releases to these countries, your knowledge of English may come in handy for translating marketing materials or communications with customers or sales prospects. The cultural knowledge you’ll acquire through learning English may also come in handy in knowing how to pitch products and ideas to English-speaking nations.

  2. Aea3daa95ad1b138b2b5922be5903244?d=mm


    Apr 30, 2019 11:27

    In the event that you experience a revive cycle every day, at that point in barely a year the iPhone may be equipped for holding 80% of its capacity it could, and following two or three years it will be down to under 60% capacity, and the proprietor may consider an upgrade.

  3. 21fb0469cf7cc087ce7a3354204530fb?d=mm


    Jan 07, 2019 06:09

    Not sure if this should be mentioned here, but there's performance degradation issues for Android builds as well. Just updated to 2018.3f2 from 2018.2 and builds on devices suffered a sudden performance drop.

  4. Ee1efe7dc3eb04d507c53a062244219d?d=mm


    Dec 28, 2018 01:39

    Please fix.

  5. 04eea23d250a87f075495085ee23aba6?d=mm


    Dec 14, 2018 20:12

    "Necessary for shipping a final release" - and now we have 2018.3 final and report is still only "Active" ?

  6. 4093de66c8fa3da20d6f5847e5f42d1b?d=mm


    Dec 08, 2018 06:59

    Bump - an update on this would be great, especially considering how long this issue has been active for. It’ll get fixed for 2018.4 LTS right!?

  7. Df6e86428e1d855b00b6734aa85bdefd?d=mm


    Sep 20, 2018 17:09

    Is this going to get addressed/fixed in 2018.3?

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