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Fixed in 2020.1.X

Fixed in 2019.3.X



Found in




Issue ID




Editor performance drop when holding down keys and moving mouse when in Playmode



How to reproduce:
1. Open the attached project
2. Open "SampleScene" scene
3. Windows > Analysis > Profiler
4. Switch the profiler to Editor mode
5. Enter Play mode
6. Hold down Shift+A keys and move the mouse through the Hierarchy or Game View
7. Notice the spikes in profiler

Actual result: Holding the keys and moving mouse causes significant performance drop in the Editor.
Expected result: The performance doesn't get affected.

Reproducible with: 2017.4, 2018.4, 2019.1, 2019.2, 2019.3, 2020.1.0a19.
Not reproducible with: 5.2,

- Reproducible on both OSX and Windows
- The spikes seems to be connected to the window the mouse is on.

  1. Resolution Note (fix version 2020.1):

    Fixed in 2020.1.0a24.

  2. Resolution Note (fix version 2019.3):

    fixed in 2019.3.8f1

Comments (2)

  1. rxmarccall

    Jun 14, 2020 20:15

    There appears to be a regression in the latest 2019.4 LTS release as I'm seeing this issue once again.

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