Search Issue Tracker


Duplicate in 2019.3.X



Found in



Issue ID




AssetDatabase.Refresh() executes slower when compared to previous versions

Asset - Database


How to reproduce:
1. Open the attached project("AssetImportPerformance")
2. Go to BugReport > Create 100 assets
3. Observe console

Expected result: AssetDatabase.Refresh takes around the same amount of time regardless of Unity versions
Actual result: AssetDatabase.Refresh takes more time than in previous versions

Reproducible with: 2019.3.0a1, 2019.3.0a11
Not reproducible with: 2017.4.30f1, 2018.4.5f1, 2019.1.12f1, 2019.2.0b10

- It seems to reproduce only on HDD hard drives. Storing project in SSD hard drive results in expected behaviour even in 2019.3.0a1 and above.

Comments (18)

  1. triangle4studios

    Aug 28, 2020 22:31

    Yeah this is insane. 10x Slower than 2019 and I cant revert my project.

  2. accitio

    Aug 20, 2020 07:39

    I'm experiencing this issue in 2020.1.0f1 too - slows me down a lot. Will this bug be reopened or is there already a follow up ticket so that we can track the status of this issue?

  3. darthdeus

    Aug 16, 2020 19:18

    Also still having this issue in 2020.1.2f1 ... it's infuriating how this locks up the editor for such a long time. I'm almost tempted to just downgrade everything to an ancient version just to avoid this.

  4. prollings

    Aug 03, 2020 14:27

    Using version 2020.1 and having this issue. Importing anything or changing a script locks up Unity for a long time.

  5. Madalaski

    Jul 27, 2020 00:54

    How is this a duplicate? This hasn't been fixed in 2020.1!

  6. Fernando-Ferreira

    Jul 25, 2020 02:33

    Unity 2020.1 still having this issue

  7. phanemy

    Oct 31, 2019 09:12

    I find this kind of behaviour too, my custom importer for 3Dtiles files, importing one big file take 3 minutes with version 1, now with the new version it take 18 min

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.