I also have a S96J.
The grainyness on mine is not very pronounced, so I don't care. However, I started getting really BAD artifacting (shimmering red dots on any black surface). They are NOT related to heat. I can play games for hours without this appearing. It happens only on Windows desktop. Basically I was using it today and all black and dark blue elements started getting red dots shimmering all over. Closing and opening the lid "clears" them out momentarily but then they come back.
I uninstalled Omega drivers for ATI, and with default windows drivers it was fine. I am now using the ATI drivers from Asus's support site (I must also comment on just how extremely slow all their driver mirrors are, unacceptable).
I think the issue is fixed now. (I was using it to play Company of Heroes for a few hours and no issues, Windows desktop is also clean.)
Either way I would appreciate an update on this BIOS problem.
Edit: Nope, the problem came back. I may have to use my warranty on this, I am very very disappointed.
The issue CAN NOT be captured on screenshot. i.e. If I take a screenshot it will not display.