Even though televisions and computer displays are generally regarded as separate categories, both device classes have a lot in common. In the case of 4K displays, even the typical device sizes are now blurred. There are already 4K desktop monitors with almost 50 inch diagonals. And even as inexpensive preview monitors, conventional televisions can make sense at video workstations. And some users now even use 4K televisions as desktop monitor replacements. This is because the large surface area can replace up to four HD monitors on the desk at low cost.
But if you want to use a TV here, you should pay attention to the input layer in addition to the desired color space support and chroma sampling. If the desktop is only displayed on the TV with a slight delay, the mouse operation quickly becomes a torture. And if the video preview shows a latency of several frames, the editing is also much less fun.
However, the exact value of the input lag is rarely found in the technical data of the manufacturers. And even if it is, it is quite laborious to check every monitor on the Internet for this exclusion criterion.
And so we are particularly pleased that this problem is now a thing of the past. The Display Input Lag Database lists current monitors according to their input latency and also seems to be regularly updated with current models. Which really makes the TV selection for the above mentioned purposes a lot easier...