One second per tick at 120 BPM is quite a ways off.
Also default is 120 in RB.

Tempo sets the beats per minute.
Resolution sets how many divisions of each beat there will be.
Most of us set reolution pretty high to be more 'exact'. However it makes the math harder when trying to do adjustments later.

For instance; if the resolution is set to 120, every midi event (and start of audio recording events) will be rounded to the nearest 120th of a beat. Setting it higher causes less rounding off and a more accurate recording of the track.
For the math side of it; 60,000 milliseconds to a minute. So 60,000 divided by a tempo of 120 would mean 500 milliseconds per beat. Divide that by resolution to see how accurate things can get. At 120 resolution (and 120 tempo)there will be a 4 millisecond round off. At 1960 resolution there will be .25 milliseconds of rounding off ... much more accurate.

BTW, resolution is one of those features that uses very little computer resources for the return benefit of accuracy. The computer is actually working just as hard to round things off at lower resolutions, in my experience.

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