Reproduction steps:
1. Open the user's attached "AndroidShaderPerformanceIssue-2021.3.zip" project
2. Build and Run for Android
3. Observe the "FPS" and "GPU" counters displayed in the Scene
Expected result: FPS: >=30, GPU: <=30
Actual result: FPS: 7-15, GPU: 80-160
Reproducible with: 2021.3.9f1, 2022.1.15f1, 2022.2.0b7, 2023.1.0a9
Couldn’t test with: 2020.3.39f1 (pink textures after downgrade)
Reproducible with these devices:
Huawei - (ELS-NX9), Android 10, CPU: HiSilicon Kirin 990 5G, GPU: Mali-G76
Samsung Galaxy S10+ (SM-G975F), Android 10, CPU: NOT FOUND, GPU: Mali-G76
Samsung Galaxy S9 (SM-G960F), Android 10, CPU: NOT FOUND, GPU: Mali-G72
Not reproducible with these devices:
Samsung Galaxy S22 (SM-S901B), Android 12, CPU: Exynos 2200, GPU: Ltd.
Samsung Galaxy Z Flip3 5G (SM-F711B), Android 12, CPU: Snapdragon 888, GPU: Adreno (TM) 660
iPhone 13 (iOS 15.0) - 30FPS; 26ms GPU
Not reproducible with: Windows Standalone
Reproducible with: Vulkan and OpenGLES3 Graphics APIs
Tested with: Windows 10
Note: Going to Assets/Game/Art/Shaders/CustomIncludes/CustomLitInput.hlsl and commenting 1099-1107 lines fixes the issue