I had "Definitely disable subtitles" Active.
When I disabled it meaning remove check mark I now get video and no subtitles
See the reasonI had "Definitely disable subtitles" Activated in the first place was because some of the videos I have downloaded had built in subtitles in the movie. And this seemed to be the only way to turn them off.
But I also just found out that even with "Definitely disable subtitles" Off I can play the MKV files with build in subtitles using "TS Muxer" and using that the MKV file plays great with no subtitles
So too make a long story short lol the fix for this "For now" is to just leave "Definitely disable subtitles" Off meaning no check mark. And play any of the MKV files that have built in subtitles with "TS Muxer"
Does that sound about right?