How to reproduce:
1. Open the “UIToolkitTest_mod.zip“ project
2. Open the “SampleScene“
3. Build and Run for Android
4. Observe the on-screen FPS counter for a few seconds

Expected result: The on-screen FPS display reaches and stays at ~30 FPS
Actual result: The on-screen FPS display stays at lower rates (~25-28 FPS)

Reproducible with: 2022.3.58f1, 6000.0.38f1, 6000.1.0b5, 6000.2.0a3

Reproducible environment: macOS 15.2 (M4 Max) Windows 11 (Reporters)
Not reproducible environment: No other environment tested

Reproducible with these devices:
VLNQA00602, Samsung Galaxy Tab S5e (SM-T725), Android 11, CPU: Snapdragon 710 SDM710, GPU: Adreno (TM) 615
Pixel 3a (User’s)

Not reproducible with these devices:
VLNQA00511, Samsung Galaxy S8 (SM-G950F), Android 9, CPU: Exynos 9 Octa 8895, GPU: Mali-G71
VLNQA00518, Google Pixel 4 (Pixel 4), Android 13, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
VLNQA00107, Huawei Nexus 6P (Nexus 6P), Android 8.1.0, CPU: Snapdragon 810 MSM8994, GPU: Adreno (TM) 430
VLNQA00335, Samsung Galaxy S20+ 5G (SM-G986B), Android 10, CPU: Exynos 990, GPU: Mali-G77
VLNQA00423, Google Pixel 3 (Pixel 3), Android 9, CPU: Snapdragon 845, GPU: Adreno (TM) 630
VLNQA00416, iPhone 13 Pro (MLVA3ET/A), CPU: Apple A15 Bionic, GPU: Apple designed, OS: 16.1.1

Notes:
- Profiler data attached in the comments
- Does not reproduce in the Editor or Standalone
- With the 2022.3 stream the FPS stays at ~28 FPS, Unity 6 stays at around ~25 FPS
- Reproduces with both Vulkan and OpenGLES3 Graphic API
- Reproducible with IL2CPP and Mono