I too have this problem. I’ve grabbed a small 18 sec crop of the beginning of a full episode and posted it here.
It works fine on iOS app, and the native MAC os player. All are direct play, with no transcoding.
However, on my Nvidia Shield Pro 2019 - the first 9 seconds I stare at Picard and listen to the audio.
If it’s not doing it for you, let me know and I’ll get the logs.
It does this on both the cropped (attached) and full video. I’ve edited nothing out.
Test File.mkv.zip (26.8 MB)