Since then I have decided to treat my TV as dumb and let Apple TV 4K and Nvidia Shield TV do all the content heavy lifting. Apple and Nvidia are doing well with updates.
I appreciate that they are hard to find now but I bought a dumb 4TV by LG.
As long as it was fast at switching on and off I was happy. It was a display unit that didn't even come with a stand, so I bought a height adjustable one from Amazon and have the TV set high enough for the soundbar not to obscure the picture. Used a chromecast on it for 18 months and then bought an ATV.
My TV is just a screen and because I have SKY, I only use the power button on the TV remote, nothing else.