[nestoras]

That was the behavior in the early development stages. I wanted to include both behaviors for educational purposes (it is very instructive to be able to observe what happens when you change the rendering window and how the frustum adapts - or not).

The scaling in frame rate has to do with the amount of terrain patches that have to be displayed. You can see the same scaling by changing the frustum viewing angle (i.e. without resizing the browser window).

Thank you! :)