I have a 65'' OLED TV and 24fps content is unwatchable without motion smoothing. When the camera pans, the "jumps" between frames are too distracting.

I only use it at about 10-20% though, not at 100% which I think is the default setting and I agree is vomitive.

There's two levels of motion smoothing, one from 24 to 60fps and one from 60 to 120fps. The second is important for OLED to avoid judder (uncomfortable panning).

I think the people complaining about the first are whiners and as a digital video expert I will allow you to leave it on.

This so much. People either don't use it and then its unwatchable with it (my case), or get used to it since its default setting on TV and +-don't notice it after some time.

Every time I go back visiting parents, which have TV with this on, anything on TV feels surreal and not in a good way. Which isn't bad, watching TV instead of interacting with my parents is stupid waste of time anyway and TV itself actively helps with that

What a hilarious bug-and-yet-a-useful-feature on the part of their TV

What is more fun is the latency those effects add to images. Found that out the hard way playing some twitchy 'have to be just right' on the controls games. In my case it was almost 1/4-1/2 of a second. Even with all of the settings 'off' there is still a decent latency on the screen (down to about 70ms) which is just enough to mess me up on some games but not all.

Most newer TVs have a game mode that significantly reduces latency by getting rid of almost all processing, including stuff that you otherwise can't disable in the menu.

And some TVs only offer low latency on certain inputs, so it pays to do some research.

Research sounds like a huge time investment. Just read the manual.

Research means you look up the TVs you're considering buying in a giant chart on websites dedicated to this.

Reading the manual doesn't help when your TV doesn't have a fast mode. And many don't.

I've been using a 46in 4K TV as a monitor, and the lag from the video processing felt super odd, until I switched the HDMI input to "game mode".

Mine still has the lag with 'game mode'. It is just a quirk of the thing I bought 10 years ago. It could also be like some of the other commenters are saying maybe the HDMI port I have it does not have the low latency bit but maybe 1 of the 4 does. Have to check again. It was not really a big deal as that is not really the use case for my TV. Which was watching movies :)

Or keep it turned on and get used to it so we can all finally start enjoying high frame rate video!

Smoothing is orthogonal to high frame rate. You shouldn't upscale lower frame rates by making up frames (essentially tweening). It adds latency (boo) artifacts (boo) and reduces fidelity overall (boo).

If the source happens to have more frames, then show them of course. But otherwise I'd prefer to see the same frame again for the extra 1/60th of a second.

I see their point though. Like UAC alerts being a janky experience that forces developers to fix things, watching interpolated 60fps is a janky experience that gets you used to 60fps so you won't react to it with an ingrained stereotype.

Believe me I've tried. It's good for sports, meh for TV shows, and horrible for films or anything filmed (which includes a lot of scripted TV.) I don't think anything but 24 (or 23.976) fps will ever look correct to me for movies.