My brother-in-law is running a Panny S77 (I think) DVD player connected via HDMI to a Denon 3806, and from there via HDMI to a Sony projector.

No macroblocking seen yet, although until we fixed some power problems we were getting intermittent brief bursts of snow on the projector.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8