Im having the EXACT same problem and Stardock has done nothing for 2 whole weeks except ask for my dxdiag. Which I gave them. It's pissing me off because I paid for this thing, and it doesn't work properly.
Why would you blame Stardock for NVIDIA driver issues? You need to blame NVIDIA for the problems and ask them to fix their drivers.
Personally, I've had nothing but trouble out of the newer NVIDIA drivers. I went back to 169 and every thing works as expected.
I'll stick with these until NVIDIA works out their problems.