Still image 3 seconds delay



I need to use 360fly 4k still image capturing in burst mode at a minimum rate of 2 images/s.
the manual says I can take 3,5 or 8 captures per second in burst mode. and that’s amazing for my application.

but in the API documentation, it says that I have to wait 3 seconds between consecutive requests for the burst sequence.

does that mean that if I set the burst mode at 3 images/s it will take 9 images during the 3 seconds they mentioned in the API docs ?
or will it only take 3 images in a second while I still have to wait another 2 seconds to post another request ?
if it was the later case, how can I come around this to get a steady rate of still image capturing ?

thanks in advance