About ten years ago, I decided to save money by purchasing a separate monitor, as well as space in the room. I bought a small TV from Sony with a matrix resolution of 1920 by 1080 and decided to use it both as a TV and as a monitor, so to speak, to kill two birds with one stone.
All this time it was very convenient to use the TV, you want to watch TV, and in a second you can work right there at the computer. The built-in TV speakers and remote control made my kit super versatile.
... Until I assembled another computer and bought a full-fledged monitor for my son. Then, as they say, I saw the light and understood how the monitor should show.
The computer does not fully see the TV as a monitor, the scale is constantly floating somewhere. Reinstalling the drivers and testing different resolutions at different frame rates did not lead to anything.
Through the control of the video adapter, the scale can be "adjusted" to the size of the screen, but in this case, the clarity of the picture and especially the fonts is immediately lost.
The matrix of the TV is not calibrated at the factory and has completely different settings and properties. On my TV, of course, there is a "Graphics" scene, but it just takes the shades into warm tones and further reduces the sharpness of the picture. The eyes get tired this way less, but in general the picture is far from ideal.
When we bought a new monitor for our son, we just had to connect it with a cable to the system unit and immediately we saw the perfect picture. Until now, he did not adjust the picture parameters, did not do the color calibration, he just shows perfectly out of the box, without any dances with tambourines.
In my understanding, the TV can be used as a monitor only for watching movies or sitting for a short time at a computer game. If you open the text on the TV and work with it, then in 10-20 minutes your eyes will hurt.
The comparison was made on screens of the same size (24 inches) with the same resolution (FullHD, 1920 * 1080).
Again, I am convinced that each thing should work as intended. Now I am looking towards buying a new monitor, but already a little larger and always with built-in speakers.
Specifically, I have another drawback is that in the room with the TV-monitor there is a large TV from the same brand. And the console signals were completely duplicated on the monitor. I even had to glue the remote control signal receiver, so that when watching a large TV, I did not turn off / turn on the monitor.
A TV is a TV, even if the resolution is 4K, it will still not replace a monitor. These are completely different devices with different properties and they are created for different purposes.
But the reverse procedure works great, excellent TVs are obtained from monitors.