iPad Air 2 analysis issues

I used a friends iPad Air and it analyzed two songs at once, making the analysis twice as fast as my iPad 4.

I just got the iPad Air 2 and it is analyzing them just as slowly as the iPad 4, this seems weird since the Air 2 is way faster then the Air.

Unless me wanting to distinguish major and minor keys is causing this, since that feature was not available when I used the iPad Air.