Moved from the Creative Cloud to the Premiere Pro forum. They will be able to help you here.
What model CPU and graphics card?
More information needed for someone to help... please click these links and provide the requested information
-Information FAQ http://forums.adobe.com/message/4200840
-Effective questions http://forums.adobe.com/thread/416679
-How to get help quickly http://forums.adobe.com/thread/419406
Please provide your exact brand/model graphics adapter and your exact driver number
If you are on Windows, do NOT rely on Windows Update to tell you about graphics adapter drivers... you must go direct to the vendor web site for your brand/model