I'm having a very annoying problem while trying to work on my project with PowerDirector. It never had this problem until recently and I don't have PD set to automatically download updates, so I don't know why it's starting now. It seems whenever I play back the video during the editing process, it plays half a second of the video, then renders, then plays another half a second, renders again, and it makes editing absolutely impossible. There's this green bar above the timeline too so it only plays the amount that shows the green bar...

It didn't do this a couple of days ago.. Why's it doing it now?