did you check the audio on the ones that didn't work (maybe some have mp3, other ac3 or dts)? some dvd players have problems with high bitrate xvids, or any of those options like qpel, gmc etc.
asus z170-A || core i5-6600K || geforce gtx 970 4gb || 16gb ddr4 ram || win10 || 1080p led samsung 27"