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[Android] Performance is worse in 5.5 and newer versions than 5.4 because Graphics.PresentAndSync takes around 10 ms more



Reproduction steps:
1. Open the attached project;
2. Build the scene "main" on Android platform with enabled Development Build option;
3. Open the built program on device;
4. Open Profiler window and attach the device;

Actual result: Graphics.PresentAndSync time is around 50-60 ms. Profiler performance is 15 FPS.
Expected result: Graphics.PresentAndSync time should be around 30-40 ms. Profiler performance should be 30 FPS (performances.jpg).

Note: The issue happens only with "Mali" GPU, but does not happen with "Adreno", "NVIDIA"and "PowerVR" GPU.

Reproduced with: 5.5.0b1, 5.5.3p3, 5.6.1f1, 2017.1.0b5
Not reproducible with: 5.4.5p2
Regression introduced in 5.5

DUT (reproducible):

Samsung SM G903F*, OS:6.0.1, CPU:armeabi-v7a, GPU:Mali-T720, Build:samsung/s5neoltexx/s5neolte:6.0.1/MMB29K/G903FXXU1BQC1:user/release-keys

Samsung SM G800F (Galaxy S5 Mini)*, OS:5.1.1, CPU:armeabi-v7a, GPU:Mali-400 MP, Build:samsung/kminiltexx/kminilte:5.1.1/LMY47X/G800FXXU1BPC4:user/release-keys

DUT (not reproducible):

Sony D6603 (Xperia Z3)*, OS:6.0.1, CPU:armeabi-v7a, GPU:Adreno (TM) 330, Build:Sony/D6603/D6603:6.0.1/23.5.A.1.291/2769308465:user/release-keys

Htc HTC One M9*, OS:7.0, CPU:arm64-v8a, GPU:Adreno (TM) 430, Build:htc/himauhl_htc_europe/htc_himauhl:7.0/NRD90M/869604.3:user/release-keys

Samsung GT P5200 (Galaxy Tab 3 10.1)*, OS:4.4.2, CPU:x86, GPU:PowerVR SGX 544MP2, Build:samsung/santos103gxx/santos103g:4.4.2/KOT49H/P5200XXUBNL1:user/release-keys

Nvidia SHIELD Tablet*, OS:6.0.1, CPU:armeabi-v7a, GPU:NVIDIA Tegra, Build:nvidia/wx_na_wf/shieldtablet:6.0.1/MRA58K/49349_766.5399:user/release-keys

Resolution: Investigation showed that user has disabled mip maps generation after the project was upgraded. This has reduced the performance.

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