Your problem seems to be the original content quality and not the hardware. Out of sync content is regularly found in questionable downloads. Your solution is better understanding of selection of known sources.
What it lacks in ‘Playing Everything The Shield Can’ - it more than makes up for in ‘The Best Dam Plex App EVER MADE!’. <—Once you go Plex App on Roku <— you never go back. <— no matter what you have to do.
I’m interested in seeing a ‘MediaInfo’ report on that media.
We can compare cucumbers all day, but let’s make a salad and see whatzup.
lol
(if you don’t have that already - you may not know everything there is to know about encoding)
The Punch Line is - I have it and I don’t - so chances are you don’t either…lol)