I have seen some info where it says to match the NSS block size (4kb)
and the raid stripe size. The smallest stipe size I can do is 8kb and
testing shows this to be a little slower. When I set the stripe size to
64 kb it seems little perkier. I cannot change the nss block size from
what I see but what about changing the read ahead on the nss pool? Would
that help balance that out?

Is this really an issue to have a 4kb nss and 64 kb stripe size?