First question - yes, RB looks ahead and adjusts based on your input as default

Second question - That depends on which selections you make when the ACW first opens.
There is a popup that happens and asks if you want to do tempo only or do you want to figure the chords too.
It is very easy to click past that popup without realizing its importance.

I do not work here, but the benefits are still awesome
Make your sound your own!