did you try using a different pool for mining eth?
also can you flush the oc settings and see if that is causing any issues?
did you try reverting back to old claymore version and check if it crashes anymore?
I did not try a different pool yet, I have wiped the overclock settings as that was my first thought on what would be causing it. It did help a little (in terms of frequency of the rigs going down) however they still go down. Did not go back to an older version of claymores as I believe the newest version of claymores made all previous versions stop working. Unless that has been fixed or changed since I was forced to move to version 15 by smos.