can a s905x handle x264 4k/60fps video? i've tried all the big buck bunny 2D files. it can play them properly except for the 2 videos below. so i think it must be a hw limitation
It can, it was fixed in a 7.x kszaq build a while ago, but recent kernel/kodi updates might have changed that. But yes, plain s905 is better at h264 than s905x.