There’s also the laws of large numbers here. When you make hundreds and thousands of guesses, even with really high accuracy, you’re going to get some wrong. For a 4K movie at 24 frames a second, you’re talking millions of guesses per minute, perhaps billions or more over the length of an entire film. It’s inevitable you’re going to get weird glitches, artifacts, or just parts that look “off”.

It’s better to use a light touch for techniques like this rather just blindly applying it to the entire film.