I just rented Speed Racer today on Bluray ( My excuse is two young boys) and noticed horrible artifacts in the red channel. I know Bluray is generally 4:2:0 color space but this was worse than anything I've ever scene... Even on DVD. I'm watching on BV4 (720p) +BS3 through a Samsung P1500 via HDMI. From a viewing distance of 10 feet I could easily count the aliased 'stairstep blocks' in the outline of the letters during the opening title sequence.
After a little experimentation I concluded:
1. With it's oversaturated colors and ultra sharpened images this particular title may have pushed the limit of the VC-1 codec.
2. Upon closer observation, I noticed that visually similar Bluray titles such as Cars (AVC codec) also displayed a bit of problems with the red sampling. Although to a much lesser degree.
I did wonder why such a great processor such as the BS3 was not more aggressive with addressing these imperfections. I decided to switch the player to Component out and was relieved to see the issue resolved. My guess is that the BS3 is more liberal with it's handling of the component signal than with the Digital HDMI signal. I suppose that the issue could also have been the Samsung.
If anyone with a BS3 can bear to rent Speed Racer on Bluray I'd be very interested if they can produce the same results.