I have used my Sony Movie Studio platinum 12 for well over a year with no problems whatsoever until about a week ago. The problem started when I imported a clip (it was the same file format that I have always used) and the preview screen was green. I looked online and found that i should change the compoundplug file name. I went ahead and did that and that fixed my green preview window problem. But it created a whole new list of problems. Now my preview window is lagging to the point of barely being able to watch it, my program is not as responsive as it was before and last my render times have dramatically increased. I have tried a fresh install, deleted the cache and tried different file types. The problem still exist. Does anyone have a fix for this?