With a consolidated wav file you don't have the control like the individual track segments. Below you can adjust the timing, volume or length as well as stretching it so it plays a slow strum. You have total control of what is played and where.
Sure if you are up on stage with Biab backing or don't use a DAW it won't help but if you are just creating up songs/tracks then this will give you the control that you need.

Watch https://www.dropbox.com/s/9xqixqq7uvj3wbu/Reaper-Biab-Track-Injector-Pushes-3.mp4?dl=0

Download Reaper-Biab-Track-Injector-Pushes-3.mp4

The Pushes use a 4 bar Hold so you can adjust to what length you like.

Biab Track Injector for Reaper
Free Biab Chord Picker Tool