[knives of ice]

does anyone have any recommendation for a good active displayport to hdmi adaptor.

thus far i have purchased two adaptors from amazon

http://www.amazon.com/gp/product/B00DOZH...ge_o05_s00

and

http://www.amazon.com/gp/product/B00EDT0...ge_o00_s00

i have my tv upstairs connected to the displayport adaptor and my downstairs dedicated home theater connected to the hdmi output.

the adaptor appears to work just fine but i'm going nuts because for some reason i get this wavy part of the picture that will appear randomly on my tv upstairs. i'm not sure how to describe it other than picture interference that goes down the screen randomly every few minutes when trying to watch something. i had this problem with the first adaptor which made me think must be a crappy adaptor so i bought a 2nd one and i still get the same thing. the other problem is the adaptor will not work with any 7.1 dts-hd surround sound.

not sure if this problem is even avoidable i may be better off using an hdmi switch at this point. no idea what could be causing the problem with the adaptor.