Jerky or slow playback http://forums.adobe.com/thread/1071217
From the Premiere Elements Information FAQ http://forums.adobe.com/thread/1042180
•You MUST use an account with Administrator Privileges to run Premiere Elements
•(Doing Run as Administrator http://forums.adobe.com/thread/969395 [says Encore and also for "All" versions of Premiere] will sometimes fix "odd" errors)
•What version of Premiere Elements? Include the minor version number (e.g., Premiere Elements 12 with the 12.1 update)
•What operating system? This should include specific minor version numbers, like "Mac OSX v10.9.4"---not just "Mac"
•Has this ever worked before? If so, do you recall any changes you made to Premiere Elements, such as adding Plug-ins, brushes, etc.? Did you make any changes to your system, such as updating hardware, printers or drivers; or installing/uninstalling any programs?
•Have you installed any recent program or OS updates? (If not, you should. They fix a lot of problems.)
•What kind(s) of image file(s)? When talking about camera raw files, include the model of camera.
•If you are getting error message(s), what is the full text of the error message(s)?
•What were you doing when the problem occurred?
•What other software are you running?
•Tell us about your computer hardware. How much RAM is installed? How much free space is on your system (C:) drive?
•How many and what speed are your hard drive(s)... ie 5400rpm or 7200rpm or?
And some other questions...
•What are you editing, and does your video have an orange line over it BEFORE you do any work?
•Which version of Quicktime do you have installed?
•What is your exact brand/model graphics adapter (ATI or nVidia or ???)
•What is your exact graphics adapter driver version?
•Have you gone to the vendor web site to check for a newer driver?
•For Windows, do NOT rely on Windows Update to have current driver information
•-you need to go direct to the vendor web site and check updates for yourself
•nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
•ATI Driver Autodetect http://support.amd.com/en-us/download/auto-detect-tool
Exactly what is INSIDE the video you are editing?
Codec & Format information, with 2 links inside for you to read http://forums.adobe.com/thread/1270588
Report back with the codec details of your file, use the programs below... A screen shot works well to SHOW people what you are doing
https://forums.adobe.com/thread/1070933 for screen shot instructions
Free programs to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
Does your video use a VARIABLE Frame Rate or a Constant Frame Rate?
A lot of important questions.
I would start with answers to the following
1. What are the properties of the files that you are putting on the Timeline - brand/model/settings of the camera that recorded the video?
2. What is the project preset that you are setting manually or the project is settings automatically? In this regard, go to Expert workspace Edit Menu/Project Settings/General and tell us the readings for Editing Mode, Timebase, Frame Size, Pixel Aspect Ratio (even if the fields look grayed out).
3. What are your specific export settings under Publish+Share/Computer/.......?
4. Is your video card/graphics card driver version up to day according to the web site of the manufacturer of the card?
5. Do you have the Playback Quality set in the monitor to Highest instead of Automatic? (Right click monitor, select Playback Setting, followed by Highest).
Please clarify....are you saying that you see your choppy video when previewing in the Edit area of the program, but not when you or your viewers play back the export of that Timeline content using their favorite players? That is important to me in distinguishing between a preview issue versus an overall project issue (importing, editing, and export).
Please consider all, and I will customize a reply.