Repro steps:
1) Download both .apk files and transfer/install them to device
2) Run the version built with Unity4 - BUG_ResourcesLoad4 and notice how fast the scene loads and how short Unity Splashscreen is displayed
3) Run the version built with Unity5 - BUG_ResourcesLoad5 and notice how slow the scene loads and that Unity Splashscreen is displayed ~3 seconds longer