X96W (S905W) mkv problem

[wilbert61b]

A few weeks ago I received two X96w boxes. One with Bluetooth and one without. I upgraded an OUYA and an Minix Neo 7. On first sight the boxes seem ok but when I started to play MKV files the problems began. During the play of a movie a get may times little flickering scares most of the time areas with the same color (for example in a black night sky etc). I tried the KDplayer, Kodi 17.6, VLC player, MX player. Had the movies on usbstick and trough the network (I keep them on a diy nas). When I try them on the minix or OUYA box everything runs great so the problem are not my files. When I check cpu use in Kodi while playing a movie it is very high on all cores (90-95%). in Kodi hardware decoding is on. I start to think that there is something wrong with the software or drivers.

I've tried multiple files on both X96's and the minix and OUYA

I also found that playing dvd files (VIDEO_TS) in Kodi the movie is stuttering, but chancing the Deinterlace setting works ok. VLC has no problems with DVD files. I am not sure if it is the same problem.

Anybody any suggestions?

[wilbert61b]

I have been testing some more. When I play a MKV file with hardware acceleration I get video artifacts. If I shut down the hardware acceleration the artifacts are gone but now there is a bit of irritating lag in the video. This happens in Kodi aswell VLC. The artifacts or lag are bigger in higher resolution movies (1080 vs 720). Is it possible that this is a driver problem for the hardware of the GPU and that the lag is comming from a processor that is running on its top? The X96w has an 5 core Mali450MP GPU