The latest issue I'm noticing is a pulsing of the brightness during playback of video files..this is both in Kodi and in the native player. It's not there on the same files when I play then on my laptop.
That's Imprex image enhancement dynamic contrast. It can be disabled if you don't like it.
Play a file in HiMediaplayer, press remote menu button to get settings. Then:
Advanced Options - PQ Settings - Imprex Engine - Dynamic Contrast (third from top): Off
Imprex can also be disabled entirely:
Advanced Options - PQ Settings - Imprex Engine -Off