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Won't Fix
Votes
0
Found in
2021.3.31f1
Issue ID
UUM-53894
Regression
No
NativeInputSystem.IOCTL taking ~250ms when reconnecting a BT Receiver
Steps to reproduce:
1. Open the attached user's project "InputRumblePerformanceBug.zip"
2. Connect a BT receiver to your PC
3. Pair your Xbox Controller (Model 1708) with the BT receiver
4. Note the Console Message that it successfully connected
5. Enter Play Mode and open Profiler with Deep Profiling enabled
6. Unplug the BT receiver and observe the first big call
7. Replug the BT receiver and observe the continuous calls made by NativeInputSystem.IOCTL taking ~250ms
Expected results: NativeInputSystem.IOCTL does not take 250ms when reconnecting a BT receiver
Actual Results: NativeInputSystem.IOCTL taking ~250ms when reconnecting a BT Receiver
Reproducible with: Input System 1.4.4, 1.6.3, 1.7.0, 1.8.0-pre.1 (2021.3.31f1)
Not reproducible on: Input System 1.6.3, 1.7.0, 1.8.0-pre.1 (2022.3.11f1, 2023.1.17f1, 2023.2.0b14, 2023.3.0a10)
Reproducible on: Windows 10, Windows 11
Not reproducible on: No other environment tested
Notes:
-Could not reproduce on any other Xbox Controller besides Model 1708
-Note that this also happens when the Xbox controller is low on battery and is disconnecting and reconnecting frequently, which causes large periods of degraded performance
-Issue is also reproducible in build
-Issue is not reproducible when disconnecting and reconnecting the controller via cable
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Resolution Note:
Thank you for reporting a bug to Unity.
We have reviewed the issue carefully, and in this case, the team is unable to prioritize fixing this bug. We won't be considering the bug a high priority fix because it does not happen in every instance. Today we will be closing this case, but we hope to address it in the future as new feature work.
Thank you again for taking the time to report this issue, and please let us know if there is anything else that changes the impact or severity of this issue.