Major problems with windows 1803 update.

All of my rigs use  570 or 580

After update.  I can't get any rig to have more than 6 gpus attached, 10 out of 12 I can only get 5 gpus working.
Takes a very long time to initialize claymore miner.
If I try to go past 5 or 6 gpus claymore timesout/reset after 5 min.
Everything was working fine before the 1803 update with latest claymore and amd latest drivers

basically i have the same problem as https://bitcointalk.org/index.php?topic=1433925.msg36032619#msg36032619

There is nothing useful in logs/debug.