I'm using the Panasonic TH-42PZ80U. When I'm watching BluRay movies the picture looks pretty grainy, I dont know why this is. My main use for the t.v. was playing games on the ps3 and xbox 360. When I play games the pq is amazing. It's super clear and I have no complaints about the pq when playing games. But when i'm watching BluRay in 1080p the pq looks grainy. I don't know why this is and it's severly limiting the pq when i'm watching movies. What should I do to fix this problem?