I'm living with the Asus .281 drivers for now. While the write performance is a dismal 16MB/s the read performance is a sweet 111MB/s. For what I do on the computer most of the writing to disk is small cache files andand such and occurs in the background so the performance hit isn't all that noticeable. Loading programs and booting is very fast.
It will be nice to be able to write at full speed too, for those times I transfer those 100+ MB files around to the various logical drives of the array and to speed up overall performance to what it could be. I keep checking Asus twice a day just hoping the fix has been posted.