Changing how the timer works for timers

What I'd like to do is beable to change how timers count...
I noticed under: File>Global Preferences>timers, you can change the timer interval.

Does that mean, if I change that to say 45 seconds, that a world.doafter 2, "blahbity blah blah"
It would really do it after 90 seconds instead of 2 seconds?

If So this is exactly what I'm looking for. If not, whats that for?

No, that is the "granularity" of timers.

If you made it, say, 5 seconds, then timers are checked every 5 seconds. Thus a 1, 2, 3, 4 or 5 second timer might go off at the same time.

However, if you specify a 45-second timer, that is how long you will wait, give or take the timer granularity (give, really). So, if you specified a 45-second timer, with a timer interval of 10 seconds, then (depending on where in the 10 seconds the timer started) you might wait between 45 and 55 seconds.

The option was really there for slow PCs - I would leave it at 1 second.