mcewinter wrote:I purchased an ATI HD5450 to fix my black screen w/audio (core i3 first gen), which it did. Now I'm getting some crazy flashing and macro blocking which didn't occur until some time after changing video adapters. This only happens during some programs - it is not a per channel issue for me.
I'll eventually be going the way of Silicondust's DVR so I'm teetering on buying another Shield or trying a NVidia card but I'm not convinced another card is going to fix it.
Flashing and Macroblocking on select programs
The issues you describe sound very similar to the problems I'm having.
I replaced an ATI HD5450 with an HD6450 because the HD5450 would stutter every now and then. The HD6450 has been fine until the recent appearence of H.264 720p protected content.
My guess is that the overhead associated with HDCP processing is causing the problem and this is why it's been so hard to pin down. I would throw another video card in to fix this if I had more assurance that the GT cards were handling the "H.264 720p protected content" correctly.