Poor picture quality during HW transcode.
I have Qnap TS-251+ nas and plex server running on it.
I bouth plex pass to be able use HW transcode function.
It works well with low hw resources, but in case of low bitrate 1080p movie , the picture quality is very bad.
With sw transcode the picture qualiti is same like the original.
But with hw transcode , the picture is checkered, blocky.