I removed chrisjenx/Calligraphy library to use a native Font XML on Android app android official documentation.
The replace activity was simple but now te font is rendered without antialiasing, in the light fonts the difference is evident. I have used the same ttf font (lato-light.ttf).
the top is rendered natively, the bottom is rendered with calligraphy.
the font is Lato - Light
The only solution I have found is return back on chrisjenx/Calligraphy library.