Which version of DirectX are all of you experiencing drops running? I have found a single bench where I can show any drop(MDK2- 16x12x32 w/ani), and gameplay backs this up. UT in particular I was having some performance issues realting to input lag running 16x12 which are now gone, the game runs quite a bit smoother with the Det4s for me(running a GF2 Pro450, DX 8.1 682 build).