This knowledgebase article is in addition to the information available on the Photoshop Elements blog post: http://blogs.adobe.com/pselements/photoshop-elements-basic-troubleshooting-to-fix-most-issues/#Preferences.
If you are facing issues with Photoshop Elements slowing down or freezing while using various tools, use these troubleshooting tips to solve the error.
Solution 1: Let Photoshop Elements Editor idle
Solution 2: Network printers
Solution 3: Stop the Synergy service
The Synergy service may interrupt with the movement of the mouse in Photoshop Elements Editor. Do one of the following:
Solution 4: Disable the Rapport service
If you have Trusteer Endpoint Protection installed on your machine and are observing freezing problems, try disabling the Rapport Service.
Note: Using Task Manager to stop the Rapport service does not solve this issue, because this service gets automatically restarted in the background.