Awesome! After removing Hyper-V everything just rocks!
No performance glitches, audio works perfectly, Aero works perfectly etc.
Does Microsoft goes to fix anything in R2?
I have completely same issue. The machine is less sophisticated than timofcourse has, but still: AMD x64 QuadCore 2.3 GHz, 4Gb RAM, GeForce 8400GS. The performance is terrible. I’m trying to uninstall the Hyper-V now.