How to reproduce:
1. Open the attached “TestBackgroundFrameTiming.zip” project
2. Enable “Frame Timing Stats” (Edit → Project Settings → Player → Other Settings)
3. Build and Run the Player
4. Focus and unfocus the Player (switching tabs, turning the device display off and on)
5. Observe the Logcat Console

Actual result: The 4th frame after regaining focus shows a spike in time (relative to how much time was spent unfocused)
Expected result: Frame timing is consistent (on an Android device ~33ms)

Reproducible with: 2023.1.0a3, 6000.0.65f1, 6000.3.4f1, 6000.4.0b4, 6000.5.0a4

Reproducible on: MacOS Sequoia 15.7.3 (M1 Max)
Not reproducible on: No other environments tested

Reproducible with these devices:
VLNQA00611, Samsung Galaxy S24 Ultra (SM-S928B), Android 14, CPU: Qualcomm SM8650-AB Snapdragon 8 Gen 3, GPU: Adreno 750
VLNQA00529, Google Pixel 4 (Pixel 4), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno 640
VLNQA00468, HUAWEI P40 Pro (Global) (ELS-NX9), Android 10, CPU: HiSilicon Kirin 990 5G, GPU: Mali-G76
VLNQA00172 , Samsung Galaxy S8 (SM-G950F), Android 9, CPU: Exynos 9 Octa 8895, GPU: Mali-G71x
VLNQA00232 - iPhone 8 Plus (MQ8M2ET/A), CPU: Apple A11 Bionic, GPU: Apple designed, OS: 16.7.10