MWLL Launcher and in game performance.

[AtlasNR]

DX10 in x64 and I have no issues on either of those maps at maxed settings.

Running on a Core i5 750 @ 3.0ghz, 8gb of DDR3 1333mhz, and a GTX465 1gb

[Le_Petit_Lapin]

I'm fine on all maps, except that Desert one with the meteors falling from the sky? Thats Death Valley right?

I suspect it might be a driver issue, I upgraded to the latest ones (05/01/2011 IIRC) and the skipping was a lot less.......but still skipping.

Running on a Core i5 @ 3.8Ghz, 8GB Ram similarly overclocked, and a ATi 6870 running at Stock with a slight memory O/C IIRC.

As I say, stable on all other maps?  I tried turning the graphics settings right down, but it still bloody skips on that map, so just whacked them up again. I dunno.

What effects do you lose dropping to Dx9 64bit?

[-AAA-]

Effectively none, especially with the CCC pack.