@crossg

Your HD player is capable of outputting it's source at 1080p/24 in the 120hz frequency range.

Your HDTV is capable of receiving a source in the 120hz range.

We have established this, that each frame from the source (120hz range) is repeated 5 times every 24th of a second. [smoother picture]

Now instead of you directly connecting, you are now relaying through the receiver that let's say only supports 72hz. ( hint: each frame is repeated 3 times every 24th of a second.[ not as smooth picture])

Now what do you think would happen when you output 120hz to 72hz to something that will support 120hz?