Search Issue Tracker

Fixed in 2021.1.X

Fixed in 2019.4.X, 2020.3.X



Found in




Issue ID




Meshes with enabled Read/Write option report their memory consumption incorrectly



How to reproduce:
1. Open user-submitted project (, SampleScene
2. Make a development build with the 'joker_thief_RW' in the scene
3. In the scene replace 'joker_thief_RW' with 'joker_thief' and make another development build
4. Open each build, attach Unity profiler and take a detailed memory sample
5. Compare the memory report of Assets/Mesh for both builds

Expected result: model with Read/Write enabled reports memory consumption correctly
Actual result: model with Read/Write enabled either reports identical memory consumption as without R/W or only a slight increase(~0.2MB)

Reproducible with: 2018.4.26f1, 2019.4.8f1, 2020.1.3f1, 2020.2.0a21

Tested on macOS
Newest versions of Unity report higher memory consumption for R/W models, but only marginally(0.2 MB difference); may still be incorrect
2018.4.26f1 - Read/Write disabled: 2.2 MB
2018.4.26f1 - Read/Write enabled: 2.2 MB

2019.4.9f1 - Read/Write disabled: 1.8 MB
2019.4.9f1 - Read/Write enabled: 2.0 MB

2020.1.3f1 - Read/Write disabled: 1.8 MB
2020.1.3f1 - Read/Write enabled: 2.0 MB

2020.2.0a21 - Read/Write disabled: 1.8 MB
2020.2.0a21 - Read/Write enabled: 2.0 MB

  1. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.0a9

  2. Resolution Note (fix version 2020.3):

    Fixed in 2020.3.0f1

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.