24 fps or off?

" The reason to turn 24fps off is when you have a display device that has a problem with 24hz frame rates."

24fps seems pretty low. Are you saying a TV that is able to display Blu Ray quality resolution may have trouble with 24fps? 

I'm not saying you're wrong. With video, I don't know every small detail like I do with audio. I thought you need to be somewhere around 30+ fps. Maybe I'm confusing HT video with computer graphics?

"24fps seems pretty low. Are you saying a TV that is able to display Blu Ray quality resolution may have trouble with 24fps?"

Yes, you are confusing HT with computer graphics.  Most (basically all) films are actually shot at 24 fps.  To display these movies perfectly, both the source and the display need to be capable of, and set to, true 24 fps.

auxinput had a very good explanation of the technical reasons underlying this issue, much more information can be found on line, of course.

24p support has to do with maintaining the source material of film, as most films are shot in 24fps. Depending on the display in question (LCD, plasma, OLED, etc.), this format will either be left in 24fps, get up-sampled in multiples of 2-3 (48-72hz, i.e. advance mode on the Pioneer Kuros), or it will get converted to 30 or 60fps (or multiples thereof in the case of LCD displays i.e. 120hz-240hz) using frame interpolation/pull-down techniques, which can cause everything from excessive judder to the dreaded "soap opera effect" common to LCD/LED displays. If your source player and TV support true 24p, leave it on (or set it to auto so that it will engage when running film content and disengage when running video content). Hope this helps!

-David