This is just like the HBO PQ "pulse" from a couple of years ago. You'd be watching some movies or shows and they would be macroblocking as a continuous pulse (blocky, clear, blocky, clear), it wasnt easy to notice but once you did it sucked. More and more people noticed it, and less and less said "I dont see it, its your system", then poof one day it was fixed...
65" EF9500 / Xbox One S
AV7702 MKII / Model 7125
Klipsch stuff and Rythmik stuff