The problem is obvious on video parts of low frame rate and scarce I-Frame placements. (poor seeking accuracy)
And a likely hardware specific issue:
App crash upon reaching 22.566667 or later in the sample video with the HW+ decoder. (works alright with the HW and SW)
LC1860, Android 4.4.4 (API 19), MX Player 1.15.5 (armeabi-v7a).