Note that the dag cache isn't implemented in 1.27 for amd cards, so when you mine eth+zil you loose 2 dag generations every 90 minutes. A few percent. This is fixed in v1.28
For the moment I am to excited about that 67 Mhsh seeing in the miner and I am staring at the Anydesk from almost half hour now.I don't even have a new motherboard with BAR option to give another boost otherwise I believe I would be seeing 75 Mhsh without problems here.I will update in due time to the new version,no worries about that.