I wonder if that means that from macOS 10.11 and VSTGUI 4.6 onwards CLayeredViewContainers become completely obsolete?
I am in fact successfully using CLayeredViewContainers in my UI implementations to come by performance issues on Mac. I have to workaround plenty of stuff, though: e.g. https://sdk.steinberg.net/viewtopic.php?f=5&t=77 which I never received any feedback on, CScrollView and other utility views inherit from CViewContainer, CSplashScreen doesn’t support CLayeredViewContainers either and offsetting a CLayeredViewContainer isn’t supported, out of the box (used for collapsible GUIs e.g. Black Rooster Audio Magnetite, which currently has to be worked around by invalidating the entire view in an idle timer when the GUI is collapsed ). There was also a customer that reported black flickering rectangles / refresh issues on his Mac, that could be removed by falling back to CViewContainers, which only seems to happen with specific graphic hw. With Joschas report on the newly (?) introduced performance issues this all becomes a little puzzling so an official clarification would be extremly appreciated.