Mac or Windows, and what is your hardware?
Things and Software to AVOID when authoring/burning a disc... says Encore, but also applies to Premiere Elements and disc burning
Start --> http://forums.adobe.com/thread/608660
#2 has WHY Explained http://forums.adobe.com/thread/607390
Set your Premiere Elements DVD output to a folder on your hard drive and then use the FREE Imgburn to burn the folder to disc for DVD... Premiere Elements 13 WILL write a DVD or BluRay to an ISO (send the author a PayPal donation if you like his program)
Read http://forums.adobe.com/thread/1322583 for notes on installing Imgburn WITHOUT any toolbar add-ons... Set Imgburn to use the slowest burn speed your drive and media will use... I set my burn speed to 1x and let Imgburn adjust to the actual minimum