Editor performance drops extremely after HMD becomes inactive using OpenXR due to GFX.WaitForRenderThread while in Play Mode

Steps to reproduce:
1. Open the attached user's project "XRPerformance.zip"
2. Connect the Oculus link to Quest 2
3. Make sure OpenXR is selected as the XR Plugin
4. Open the Profiler
5. Enter Play Mode
6. Observe the Profiler while the headset is active (press a finger over the sensor)
7. Dismount the headset for it to become inactive
8. Observe the GFX.WaitForRenderThread in the Profiler climbing rapidly when the headset is inactive

Expected results: Editor performance does not drop extremely after HDM becomes inactive using OpenXR due to GFX.WaitForRenderThread
Actual Results: Editor performance drops extremely after HDM becomes inactive using OpenXR due to GFX.WaitForRenderThread

Reproducible in: OpenXR 1.5.0, 1.7.0 (2020.3.47f1, 2021.3.24f1, 2022.2.18f1, 2023.1.0b15, 2023.2.0a13)
Not reproducible OpenXR 1.4.2 (2020.3.47f1)

Notes:
-Issue only reproduces with OpenXR as the XR Plugin provider
-As per user comments it's also reproducible in Build