I have had two autoland attempts go nuts in the flare over the last couple of years in VMC conditions. One was due to a wind shift, from 10kts crosswind to a head wind in the last 100' and the other NFI, no traffic and no wind. I've also seen a great autoland in the max crosswind allowable for the type, B767-300, of 25kts. The actual LVP limit is 10kts. Why the performance is so variable I have no idea but it makes me ultra cautious when doing an autoland either for practice or for real.
Regards,
BH.