In scenes with variables, such as lighting, or exposure, etc., I find that one often does get flicker/strobbing with the Auto Correction Effects. I will only use those, when everything remains constant for my scene, and will Cut each scene, as needed.
I think that the Three-way Color Corrector is a better Effect for any Color, or Density correction.
Do you think that a bit more practice and going lighter on the color correction adjusts will work? Or have you been there and done that?
I have not tried it, but, as a troubleshooting tool, you might want to compare your Premiere Elements color correction results with those
from the free DaVinci Resolve Lite (the full version is very very expensive).
Please consider and then let us know the outcome.
I'm so glad to have found your post here.
Are you aware of a Workflow for editing / color correction between Davinci Lite and PE12 ?
At the present time I am not aware of a workflow for editing/color correction between DaVinci Resolve Lite and Premiere Elements 12 Windows or Mac.
I have seen mention of workflows involving the DaVinci standalone in Google Search as it relates to Premiere Pro, but not Premiere Elements.
I would need to do more researching on this to decide on a probable how to. Premiere Elements lack of support for MXF would be a factor to explore.