I hope someone with more technical expertise than me can offer some tips.

I am having issues playing the 4k file on my Hisense TV. The file plays perfectly on my phone using VLC player on a Galaxy S20+.

On my TV, through a flash drive, I tried various media players on the Google/Android TV including VLC, MX, kodi, and a few others. I played around with the codec setting on each. I even tried using the TV’s USB player directly.

For each method used, either the audio kept cutting out and/or the framerate was very shaky. I suspect my TV is not compatible, and would have to stick the 1080 MP4 file that is also a bit larger, but still a reasonable size.