Hi. I'm on Windows 10 and can only play 4K Pro res 422 8 bit files with Pot Player. No other player can handle these files, including VLC. The audio is not in sync though.
Are there filters I can download or buy that would optimize playback in Pot Player?
I doubt it, what you're describing sounds like insufficient computer power. Maybe an mpv front end like SMplayer? That's about as fast a player as there is. There are other faster GUIs but all the ones I know are for Linux.