man the whole engine is on the brink, go back to 5.0 trust me, on android, 5.3 and 5.4 if you leave the app in background and return it automatically drops from 60 solid fps to below 30fps, even on templates, it also badly optimized meaning its gonna go down to 30 fps anyways, nothing you can do about it. so bad, and i have to pitch this to a publisher