2 Claymore.

When i change to new version 14.6 from version 12, i noticed that i start to get some invalid shares in miner. Not a lot, maybe 5-10 from 24hrs on 7 cards rig.
But when you have 20 rigs this is a lot. I do not use any strap option or else. I do not change any overclock settings or else. All is same. I use only -rxboost option. Rigs all 'red'.
14.6 gives some invalid shares, 12 is not.
Can you check what is problem and fix it.