All of our users who receive Itinerary emails from Delta (which are graphic heavy) have significant issues printing or forwarding them. Both tasks can take more that 5 minutes. Other graphic heavy emails do not have this problem.
I tried saving the email as an HTML and it prints in seconds so I assume the problem is something that Outlook is doing.
I am sure the Delta component to this is irrelavant however those are the only emails that behave this way.