Low-end devices optimizations

[Flakky (Alexander Blintsov)]

It appears, that my problem with Mali devices appears because of Unreal smooth frame rate.

Very low FPS on Mali devices

It appears that problem is about Frame smoothing.

Disabling “Smooth Frame Rate” option in Project Settings > General Settings and set “Use Fixed Framerate” to 60, Mali400 (Tested on Galaxy S3 and Galaxy Ace2) will render the game with 60 fps