This important part is that I get jittering on my TV, with current setup. I know your logic makes a lot of sense but I prefer not to go this route, spend an hour configure everything just to uninstall it after, regardless the result. While playing from my Mac has no jitters at I understand what you are proposing but even if I choose to install the Mac Plex release and test it, I will never use it, that is why I built my NAS. Now that I payed close attention, the important part is the jittering does not occur always, some videos have it, some don't? Streaming from Google Chrome browser on my TV with Cast functionality has one small jitter. I encode all my videos with Handbrake, so all settings are identical for all movies. The funny part is that occurs only in the beginning of stream, on TV or maybe my eyes are getting used to? But is always at the exact same sequence, as you can see. I no jittering also when I play the movie directly on site, in my Safari browser. I attached the video filmed from my Mac (played with IINA from SMB share) and my TV (Plex) as comparison. If not, I suggest you reset the Chromecast using the Google Home app on your phone. Some update, for a moment I thought this is related to automatic quality adjustment, but is not. i regularly use my Chromecast with YouTube, Plex, TVnow (a German.

Chromecast google tv plex