[mschuster91]

> but for a TV, I just want a dumb screen that I can hook an HDMI cable to and run off a computer.

Look into Digital Signage displays. You pay a brickload more money but get (much) higher quality in return.

[Uvix]

I haven't found digital signage displays with the same brightness for HDR content, or variable refresh rate support.

[patrakov]

Try a gaming monitor, Gigabyte AORUS FV43U.

[nicwolff]

My 55" LG Wallpaper signage display is pretty much perfect – it just has HDMI in from an Apple TV and never bothers me. But, it takes ~10 seconds to turn on after a signal is detected, since it was never meant to be turned off!

[reaperducer]

You pay a brickload more money but get (much) higher quality in return.

Not anymore. The last time I checked B&H they weren't very much more expensive than comparable "smart" televisions.