No video hardware acceleration on my Lenovo Tab 2 A10-70 tablet?

I have a Lenovo Tab 2 A10-70F running Android 5.0.1.

I am trying to play x265 videos from the internal storage.

MX Player shows "HW decoder not supported" and "HW+ decoder not supported."

VLC shows "Hardware acceleration error, switching to software decoding."

KMPlayer shows "An error occured with hardware acceleration."

Software decoding in all of the above apps is too slow, the quality/frame rate un-watchable.