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I think it's the frame interpolation feature that a lot of TVs have.

Motion smoothing, frame interpolation features in TVs. It's what makes movement look unnatural and on default TV settings. Old people can't tell/don't understand so it's customary to sneakily disable it for them when visiting

Yes. Motion smoothing. It's like kerning or the Wilhelm scream. Once you notice it, you'll hate it.

It makes the slow panning forests and splashy paint videos in Currys look nice, but it makes movies and TV shows look terrible.

Yes

https://en.wikipedia.org/wiki/Soap_opera_effect

Wait DLSS is about upscaling right? The “features” mentioned in OP’s post are about motion interpolation that makes the video seem to be playing at higher fps than the standard 24fps used in movies and shows.

The post is about when you are a tech savvy person, and go to a relative's house for the holiday and see some piece of tech with default configuration. Often tech companies (especially TV companies) enable buzzword technology to trick non tech savvy people into believing there was an improvement where there actually wasn't. Often, inspection with a more educated eye reveals that the result actually looks bad and ruins the original media (unless it was already terrible).

In this case the gripe is with frame smoothing technologies, which look smeared and ruin details and timing of movies. But to someone who doesn't know better it looks like "whoa, it really is smoother, I'm gonna smooth all the smoothing with my new extra smooth smoother; the smoothness salesman sold me real smooth on this" (I'm calling out the dishonest seller, not the consumer with this).

So when the tech savvy person sees the swindled relative, they try to fix up the situation disabling the bullshit, but every brand gives it a different patented bullshit name.

It's worth noting that inevitably, as soon as you leave the house the relatives will:

• Not notice a thin
• Call you because the TV "doesn't do the thing it did before anymore" and you have to explain that you did it and why it's better until they ask you to put it back
• Spend too much time trying to pot back the thing on their own, making even worse choices along the way

To actually help them you should have been involved in the choice of device, but if you ever got involved in a choice you would automatically become the designated tech purchase advisor forever and ever.

Go watch any old (think Cinderella, Bambi) Disney movie on Disney+. Notice how it's nice and sharp. It's been upscaled. Notice how the frame rate is fast, it's been interpolated.

Now, closely watch the edges of the lines. They are inconsistent, smeared and now you can't not see it... Sorry

Many modern TVs are now doing this by default and it's rarely a better experience.

It's a setting in newer TVs that "smooths" frames for lower quality media to maximize the capabilities of modern TV hardware. It very rarely looks good. This post lists what the major manufacturers call the technology.

It's the setting to disable on smart TVs for a better image. The option can do oone or more of the following: adds in-between frames, reduces noise, and upscales video. Sounds good, but the implementation is always terrible.

To disable the “soap opera effect” on televisions.

This is in regard to motion smoothing which is enabled by default on modern TVs, and give the effect of a soap opera look. People think that it makes the video look better, but it's just adding fake frames to display at a higher frame rate. Not a lot of people like this: https://variety.com/2022/film/news/motion-smoothing-how-to-shut-off-1235176633/

To make matters worse, all TV brands have their own name for this feature. This post is saying that when you go home for the holidays, this is the name of the motion smoothing in the settings to turn off for a better viewing experience the way the filmmaker intends.

I think the idea is to increase motion resolution.

On a sample-and-hold display, like an LCD or OLED, the image on the screen stays the same for the entire frame. When the image suddenly changes because the TV displays a new frame, our eyes need a bit of time to adjust. The result is that when there is a lot of motion on screen, the image starts to look blurry.

This was not an issue on older CRT displays because they used a beam that scanned the picture. Each ‘pixel’ (CRT’s didn’t have pixels but lines, but you get the idea) would only light up for a small amount of time. Since our eyes are relatively slow we didn’t notice the flickering that much, and because it wasn’t fully lit all the time the ‘pixels’ in our eyes didn’t get saturated and could quickly adjust to the new frame.

By adding interpolated frames the image changes more often and this allows our eyes to keep up with the action. Another solution to the problem is black frame insertion, where the TV shows a black image between each frame. Again we don’t perceive this as flickering as our eyes are too slow for this, but the disadvantage is that the picture brightness seems to halve.

How much blurriness you get in motion is a function of both how fast the movement on screen is and the frame rate. Fast movement and low frame rates cause more blurriness than slow movement and high frame rates.

The use-case for this feature is mainly for fast sporting events on broadcast TV, where there may be fast movements (e.g. a soccer ball) combined with the low frame rate of broadcast TV (30 or 25 fps depending on where you are).

Thank you for not typing “TV’s”