I copied this response to the Dx-10 discussion thread. Please comment there since I've taken us off topic here.
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Systems are different Rob, so yours can act dif from mine. But go to the FAQ page and download my log. Those are the only changes I've made. I have an NVIDIA video card and tried some things with it and lost my frame rates. So I did a restore in the card...more I have to learn there. Also, you can always uncheck DirectX Preview on to off, the you are back where you were. I switch back and forth all the time to find the missing objects.
You have to have your water setting above 50% to see the waves. Just save your FSX.cfg so you can throw up your hands in disgust and go back if necessary :-)
Let us know the results.
One thing I've noticed, at dusk and night some of the AI aircraft textures go to blank white. Also, the big building at Big Hydro turns white at night. These are some if the screwy "shader things" that might be fixes with a new program that is in beta right now.
There are some differences...as we see them, Communicate it on the DX-10 Discussion thread under troubleshooting. And I will say this again, it isn't for everybody...but it is simple enough to try. We don't fly at night much, so losing those textures is not a big deal. But it us smoother, the water is beautiful and the frame rates...for me, doubled with what I've done.
And another thing for anyone running it...please let us know if you find an object that doesn't work. We can always replace them with one that does from the object libraries we ALREADY have.