Hello,
While I evaluate upgrading our 3.5 to 5.1, I have noticed the new editor takes forever to ~render. I turned off all the user plugins, and it still sometimes takes 10 seconds to configure itself and fill the frame.
Is there some secret to getting this to work more quickly? I have been profiling the javascript, and there doesn't seem to be a smoking gun. Everything loads from the server quickly, and then it just hangs/churns/ with a half rendered editor for several seconds.