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Fixed in 5.4.1



Found in


Issue ID




Two independent Particle systems appear to be using the exact same seed for randomisation



How to reproduce:

1. Open attached project
2. Open scene particles.unity
3. Play the scene
- Note how the coloured particles and the black particles appear to be moving in the exact same patterns
- This happens even if the particles aren't parented/childed to each other
- The particles in both separate systems should be moving in different ways

- Reproduced in Version 5.4.0b11 (323b0238353b), Version 5.4.0b6 (2c3d6b93e789)
- Not reproducible in Version 5.3.4p1 (e89f89413a91)

Comments (65)

  1. GeekDigit

    Jan 13, 2020 17:57

  2. Brady

    Jul 14, 2019 13:40

    Still present in 2019.1.8f1.

  3. hammertime2014

    Oct 25, 2016 12:34

    This is definitely still not fixed in 5.4.1 (5.4.2 download has been pulled).

  4. PieterAlbers

    Oct 25, 2016 10:29

    I still don't have randomized particles in 5.4.2

  5. chegarty3

    Oct 14, 2016 15:43

    Still seeing this issue in 5.4.1 even though it's claimed to be fixed. Different seeds produce the exact same pattern of particles. The workaround of manually randomizing the seed does nothing.

    ps.randomSeed = (uint)Random.Range(0, int.MaxValue);

  6. Soulice

    Oct 01, 2016 14:36

    Sorry, in 5.4.0f3

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