Hey All, I could not find an answer on prior posts. I have a hacked XFX 4870 rev ZWFC (using Cindori method) and OEM GT120 plugged in. When I run hi-def youtube videos on the GT120 it runs smooth as butter. When I run the same videos on the 4870 it is choppy like it was from a computer 10 years ago. Do I have to reflash it to a newer hacked firmware?