Unreal Engine 4.5 Preview!

Has anybody managed to build a mobile project with a landscape without freezing the device on launch?
I just added a tiny landscape to the sample map, didn’t apply any material to it. The build was successful, no errors. But when I start the apk on my tablet, it stays black for ~30 seconds and says that it doesn’t react anymore, then I close it. The same project was working flawlessly on 4.4.3.