Was the stuttering happening when you type? There is a glitch in the early Gigabyte 780G boards that causes interference from the keyboard signal unless USB Keyboard support is enabled in BIOS.
Nope. Stuttering was there when just sitting watching. I don't think my signal strength/quality is great but so far the Nvidia seems to keep playing whereas the HD3200 would loop badly. This seems to follow experience in NZ.
Did you ever try different builds of PDVD8 or PDVD7.3?
United Kingdom