I tried to click “Generate Visual Studio project files” from explorer context menu and VS compiler still says that target is up to date.
And if I make any change to my game source code, compiler detects that file changed and compiles over 20 seconds.
What about private and public directories, I rely on build in tool to generate plugin from various templates. There is a button to create plugin in lower right corner of plugins window. Tomorrow I will try to manually create plugin using old tutorials.