[nawgszy]

Look at this [0]

It's an interpolation thing; it's much easier for your brain to do the tracking of an object when it smoothly moves around, instead of it having to do interp / extrapolation, and this should demonstrate why

Can I ask why you think it sounds like a placebo? I don't really see why there's any logic behind 144hz being the ceiling of how well your eyes can see, and 144hz -> 240hz is a big jump

[0]: https://www.youtube.com/watch?v=pUvx81C4bgs