What Compiling Indicator is
The Compiling Indicator is a small notification window that pops up when the Unity Editor starts a compilation. It shows you the progress of the compilation and the estimated time of completion. And you can find what assembly takes the most of your project’s compilation time.
How it works
The Compiling Indicator learns the compilation times of your project. So, its estimation will be getting correct as it experiences more compilation. All you have to do is to wait until the Compiling Indicator learns enough information. Or, to reset the learned information, you can click the Clear Database button.