How to reproduce:

1. Open the attached “IN-83694.zip” Project
2. Open the Profiler Window (Window → Analysis → Profiler)
3. Change the “Module Details panel” to Timeline
4. Connect a mobile device and Build and Run on it
5. In the Profiler target the connected device
6. Wait for the Profiler to receive CPU usage data
7. Select any point in the “Frame Chart”
8. Observe the “Render Thread” sections “Gfx.WaitForGfxCommandsFromMainThread” performance usage
9. Back out to the Home section in the device (Send the app to the Foreground)
10. Re-open the Player in the device and re-target the device in the Profiler
11. Observe the “Render Thread” sections “Gfx.WaitForGfxCommandsFromMainThread” performance usage

Expected result: Consistent performance and or low usage
Actual result: Significant performance usage (~24.5ms) and inconsistent

Reproducible with: 2021.3.46f1, 2022.3.53f1, 6000.0.31f1, 6000.1.0a8

Testing environment: Windows 11

Reproducible on:
VLNQA00499, Google Pixel 7 (Pixel 7), Android 15, CPU: Google Tensor G2, GPU: Mali-G710
VLNQA00498, Google Pixel 7 (Pixel 7), Android 13, CPU: Google Tensor G2, GPU: Mali-G710
VLNQA00517 - OnePlus 10 Pro 5G (NE2213), CPU: Snapdragon 8 Gen 1 (SM8450), GPU: Adreno 730, OS: 12
VLNQA00411 - Galaxy Z Fold3 5G (SM-F926B), CPU: Snapdragon 888, GPU: Adreno 660, OS: 11
VLNQA00374 - Galaxy S21 Plus 5G (SM-G996U), CPU: Snapdragon 888, GPU: Adreno 660, OS: 11
VLNQA00218 - Samsung Galaxy Note 9 USA (SM-N960U), CPU: Snapdragon 845 SDM845, GPU: Adreno 630, OS: 8.1.0
VLNQA00122 - Samsung Galaxy S9 (SM-G960F), CPU: Exynos 9 Series 9810, GPU: Mali-G72, OS: 10.0.0

Not reproducible on:
VLNQA00557 - Google Pixel XL (Pixel XL), CPU: Snapdragon 821 MSM8996 Pro, GPU: Adreno 530, OS: 10

Notes:
- Note that user reported the performance degradation with Gfx.WaitForPresentOnGfxThread, however this was not observed and the issue was not only reproducible on Google Pixel 7 phones
- Using OpenGLES3 Graphics API appears to lower the Gfx.WaitForGfxCommandsFromMainThread usage but raises the RenderLoop usage from ~1.00-3.00ms to ~20.00ms
- Not reproducible on Standalone and Editor Play Mode