Yup it is the only issue...I tried it with other software without a hiccup. Unfortunately I need WMC because it is the only one that is capable of playing premium cable streams.
I was hoping to get a list of all the graphics cards from nvidia and amd, the low end, up to the high end, that don't experience the stutter or flicker issues common to the 29/59 bug. Most on the list date back to the gt430's or the 5450 graphics cards and they are too old, on top of that they are the few that I know of but I know their has to be more that have been tested and verified working flawlessly with that type of content to include the ati 7x cards, nvidia 600's, intel hd 3000/4000, or amd apu's. That is my hope, I can't stand to think the 430 is my only option.