It won't be the shader IMO, I always use Posers shaders inside Vue with no issues!
You could maybe try bringing down the quality slider on your anti aliasing, other than that I don't know, sorry!!

I'm on 64 bit too so I can't use skinvue either, I know Dave is working on it so hopefully you'll have it soon!!

Injustice will be avenged.
Cofiwch Dryweryn.