I was looking for official support and was led to this forum so hopefully this is the right place.
My Xbox applied this update to Plex automatically yesterday.
Since this update any 4K content either crashes or switches from direct play to transcoding within a few seconds. All of my 4K content abides by all the rules of what is playable in Plex and has been watched before with no issues. I’ve engineered the files so that they can all play in direct play mode and it took ages - so would really like this corrected.
Please can someone investigate and provide a patch to resolve ASAP?