Go to style mode (the button to the left of style view). Set the Guitar interactive setting from 100 to 60. Make sure "Bass to root" is off. (this allows some very nice bass riffs every now & then)

Now, when you play a style with live guitars, everytime you want a single strum, just press a little harder on the chords. Every single harder press will give you a single strum.

Also, the 4th equalizer selection provides some nice & crisp & clear equalizer settings.