I noticed the other day that LibGDX provides direct access to arrays to improve performance. I have a 2D array that I access a lot, so I tested this with direct access through the items field rather than using get(). On the desktop version there wasn't much difference, but on Android 4.1 accessing the array though get() was 110% slower, and on Android 5 it was 55% slower.
I decided to look at where get is used in my app and noticed there are a lot of instances of it within the Spine runtimes. Surely this is ripe for a little bit of easy optimisation?