Effect aplied to the entire group.

Good point about the snapshot within snapshot. It’s weird that even if a snapshot  (with gaussianblur effect added) is not being invalidated each frame, it still causes severe performance issues, almost as if it is still constantly applying the gaussian blur effect each frame. I see frame rate strop from 30 to 8 if using gaussian blur on a snapshot that never gets changed. Using your method of a snapshot within a snapshot is great but it wastes a huge amount of additional texture memory (in my case an additional +40mb on ipad2s.). So hopefully corona can check on this and perhaps come up with a better fix. It totally makes sense using gaussian blur on a snapshot that is being invalidated each frame will cause major performance issues, but really, if its not being invalidated it should not still be having performance issues unless there’s a bug in the code which ends up invalidating snapshots anyways.