Guys getting mostly invalid shares here is a tip.  Your dag file must be created with the stock clock on your cards. I found some advice on another forum that deals with the issue. In MSI afterburner you can modify a config file with a startup delay. Set it for 2 minutes and once your miner is done building your dag file it will crank up. This will happen again as the dag file is being redone every 5 days. When your shares start going invalid just reboot.  Not sure how to automate this yet.

The file is MSIAfterburner.cfg and the setting is Startup Delay=0 change this to 120000.

It can be tough to change the file because Windows doesn't want you to. My way is to copy the files to the desktop modify it and put it back. Windows will ask for permission to overwrite it.