A:Answer Unfortunately, this is normal. Older movies have a much lower framerate than newer ones.
Newer TVs with high refresh rates basically have to fill in the gaps between frames (individual images). Newer movies have a higher framerates, so there's less gaps to fill which creates a nice smooth, fluid video.
So with older stuff, the space between frames is sometimes filled with the previous frame instead of a blend of the previous and next frames resulting in a skip. Your eyes get used to the fluidity, so skips become very noticeable unfortunately.