On the other end is motion stutter on OLEDs. Because of sample-and-hold, the blur goes away but the image stutters on slow moving scenes instead. If your eyes are sensitive to PWM (mine are) it's quite annoying to watch OLED movement as well.
Is that what I'm seeing on my LG C series? Every so often when I'm watching streaming video, and the scene changes, the action seems to skip frames for maybe a quarter of a second. It happens rarely enough that I haven't narrowed it down to the TV, the attached Chromecast, the streaming app, or the content.
The only setting I recall changing on the TV is the one that stops the soap-opera effect.
I think you're seeing telecine judder. The video's framerate doesn't find the diplay's refresh rate, and the TV doesn't handle it well. This is why my old Pioreer Kuro switched to 48hz on 24fps content, and it was amazing.
The only setting I recall changing on the TV is the one that stops the soap-opera effect.
OLED sample-and-hold causes blur.