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Won't Fix

Votes

0

Found in

2023.1.0a10

2023.2.0a1

Issue ID

UUM-13609

Regression

No

Editor performance drops when moving the mouse cursor in the Inspector window

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How to reproduce:
1. Create and open a new project
2. Enter Play Mode
3. Select the "Main Camera" in the Hierarchy
4. Open the Game view and open its Statistics panel by toggling the "Stats" button in the top right of the Game view
5. Note the FPS
6. Move the mouse cursor in the Inspector window and while doing that note the FPS again in the Statistics window

Expected result: The FPS is the same when moving the cursor inside the Inspector and when the cursor is stationary
Actual result: The FPS drops by 25% or more when moving the cursor in the Inspector

Reproducible with: 2019.3.39f1, 2020.3.35f1, 2021.3.3f1, 2022.1.2f1, 2022.2.0a15

Reproducible on: Ubuntu 20.04, Windows 10

Notes:
1. Performance drops can also be observed when Profiling the Editor
2. There is also a slight performance drop when moving the cursor in the Inspector without a GameObject selected but its much less noticable

  1. Resolution Note:

    It's expected to see a drop in FPS in the gameview when interacting with the inspector. Any mouse move over the inspector will trigger a repaint and since most of it is single threaded it will impact the general performance of the editor at least a little bit. If performance in the gameview is critical I suggest making the gameview full screen while testing.

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