Jazz comping speed - wrist/finger

I recently start practicing the comping exercise of "The art of bop drumming" by John Riley. But I found when I try to speed up the tempo, my left hand cant follow up the speed.



I know that using finger stroke would be an better option in playing fast tempo than wrist stroke, but i wanna try to build up my solid wrist stroke first.



I just wonder when will you turn your wrist stroke into finger stroke in doing some stuff like this : http://ift.tt/1E709aQ, at 150bpm? 160 or 180 or even higher?



Also, I got the same problem on my bass drum comping too, any suggestions or tips on both of them. I play all heel down now, would heel-toe or other techniques also be fine on Jazz drumming?



Thanks!!



P.S.: I'm a traditional grip player

Jazz comping speed - wrist/finger