FPS drops significantly when the XR device is in sleep mode

Package: OpenXR Plugin

Won't Fix

1.17.X

Thank you for reporting a bug to Unity. We are opting not to fix this issue. While the behaviors between SteamVR and Horizon Link are different, we don't see a use-case for rendering while the headset is in sleep mode when XR is enabled. If this is blocking functionality for you, please let us know and we will reconsider.

How to reproduce:
1．Open the "IN-144522" project
2．Connect a Meta Quest device via Steam Link
3．Enter Play mode
4．Put the Meta Quest device into sleep mode (press the power button once)
5．Observe the Game View FPS counter

Actual result: FPS drops to around 6-7
Expected result: FPS remains stable and does not drop significantly

Reproducible with: 1.10.0 (6000.0.2f1), 1.17.1 (6000.3.17f1)

Reproducible on: Windows 11 x64
Not reproducible on: No other environments tested

Reproducible on devices:
Meta Quest 2 (Quest 2), CPU: Snapdragon XR2, GPU: Adreno 650
Meta Quest 3 (Quest 3), CPU: Snapdragon XR2 Gen 2 (SM8550), GPU: Adreno (TM) 740

Workaround: Set OpenXR runtime as Meta Horizon Link

Notes:

Reproducible with Steam Link when OpenXR runtime is SteamVR
Not reproducible with Meta Horizon Link when OpenXR runtime is Meta Horizon Link
Reproducible with URP and Built-in render pipelines
Also reproducible in Player

FPS drops significantly when the XR device is in sleep mode

Package: OpenXR Plugin

Won't Fix

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Have a workaround or additional info about this issue?

FPS drops significantly when the XR device is in sleep mode

Package: OpenXR Plugin

Statuses

Won't Fix

Resolution Notes

Description

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Have a workaround or additional info about this issue?