[Soli]

What I meant is that the AMD A8 is probably a nice CPU, but it's single threaded performance might not be up to par since it does in fact compete with similar duo core cpus from Intel (If I am not mistaken). Add to this the overhead of Mint and Kodi, and that software decoding is still largely singlethreaded, and you have your possible reason right there.

Sadly hardware accel. is only available for ChromeOS.