I wonder if this is a common problem - when I take a bracketing burst of 5 (raw & jpg), in Live view, it takes at least 30 seconds, even more, before its done. That's a long time to wait after each burst. (this is the first problem)
When I try to take a bracket burst of 7 in Live view (this is the second problem), it sometimes does not complete the burst - it takes 2 pictures, or 5, and then stops and processes.
The settings would be, for example 5.6 - 1/100s - 1/6 s asa 100.