By default there is no policy right, I pushed DLP agent from ePO. so far we did not configured any policy. we have same configuration of 2 systems, 1 is managed with McAfee and another one unmanaged.
Now impact is one where DLP is installed. I have restarted many times since i pushed agent few days back. I even uncheck all the modules from miscellanaous tab, and applied, and wakeup agent. then restarted many times.
Still Outlook is very slow, when copy files (ex: .xlsx) from share location to outlook mail, Its takes 5-10 minutes to display as an attachment.