I've been testing the waters considering my first Premiere CC project. I've been using Premiere almost exclusively for a year and a half.
I've read here that opening projects created in CS6 in CS7 results in performance issues for some so I exported an XML of some footage from a CS6 project, and imported to CS7. All the color corrections came in wrong, looking like a bleach bypass:
When I import the sequence from CS7 it looks fine:
Have you updated to 7.0.1? There was an issue with some colour correction effects in 7.0 which might have caused the issue you're seeing.
This happened with 7.01.
When we updated from CS6 to CC, we found that the projects opened without a hitch. It asked us to save off a new project but aprt from that, it was like using the original project file. We've done this nearly 30 times now, each with CS6 project files opening up in CC and now issues.
Have you actually had permormance issues with this?